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Westers WILL HACK THE NORTHSTAR NOW!


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Very cool,

Any word if this includes elimination of the speed limiter from non Z&W rated cars?

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Easin' down the highway in a new Cadillac,

I had a fine fox in front, I had three more in the back

ZZTOP, I'm Bad I'm Nationwide

Greg

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Their current GM products here: http://westersgarage.eidnet.org/GM.htm

I suppose this would remove the speed limiter from Texas Jim's 2006 DTS, and they have a local Dealer shop in Garland: http://www.exatorq.com/

Bruce

2016 Cadillac ATS-V gray/black

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Their current GM products here: http://westersgarage.eidnet.org/GM.htm

I suppose this would remove the speed limiter from Texas Jim's 2006 DTS, and they have a local Dealer shop in Garland: http://www.exatorq.com/

yup it would along with modifying shift points advancing the timing etc etc etc

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The Twins

1997 ETC & 2003 STS

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Since my car is new, I think I need to price a new PCM to have the tune done on, instead of the one in the car. Then if I ever needed warranty service, I could change back to the stock PCM.

Another thing, if the dealer ever reflashed the PCM with a new GM update, it would probably wipe out the 400 dollar tune that was in the your PCM. That would not be good. You would have to pay to have it reflashed again. :(

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Another thing, if the dealer ever reflashed the PCM with a new GM update, it would probably wipe out the 400 dollar tune that was in the your PCM. That would not be good. You would have to pay to have it reflashed again. :(

You'd be wise and could avoid this problem by swapping back the stock PCM every time the car went to the dealer, at least while the car is still under the factory warranty. The last thing you would want is to be red flagged as voiding your factory warranty... This wouldn't be the first time I have heard of this happening.

caddy.jpg

Easin' down the highway in a new Cadillac,

I had a fine fox in front, I had three more in the back

ZZTOP, I'm Bad I'm Nationwide

Greg

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Another thing, if the dealer ever reflashed the PCM with a new GM update, it would probably wipe out the 400 dollar tune that was in the your PCM. That would not be good. You would have to pay to have it reflashed again. :(

You'd be wise and could avoid this problem by swapping back the stock PCM every time the car went to the dealer, at least while the car is still under the factory warranty. The last thing you would want is to be red flagged as voiding your factory warranty... This wouldn't be the first time I have heard of this happening.

Yep, that was what I meant about pricing a NEW pcm to have flashed and when needed, swapping back the stock PCM if I ever had to take it to the dealer. The PCM that is in the car was updated last week with the latest Cadillac flashes. Over 20 meg of downloads. Now I just need to find out what a new PCM cost and that would be my TOTAL cost for the flash. The cost of the new PCM, AND the 400 bucks to have it flashed. :):) Keep this one to swap back and forth as needed.

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Since my car is new, I think I need to price a new PCM to have the tune done on, instead of the one in the car. Then if I ever needed warranty service, I could change back to the stock PCM.

Another thing, if the dealer ever reflashed the PCM with a new GM update, it would probably wipe out the 400 dollar tune that was in the your PCM. That would not be good. You would have to pay to have it reflashed again. :(

Of course if you did this and you ever blew your engine because it over revved or because your "tune" permitted a lean mixture and detonated at high RPM and caused serious damage you would fess up and not change the PCM back to the old one right, right?

About two years a member from the other board removed the rev limiter from his CTS-V and blew his engine... You can not believe how many members told him to "de-tune" (return it to stock) and remove the intake from his V and tow the car to GM for the catastrophic engine damage to be repaired under warranty..... ETHICS, MORALS are in the TOILET these days.......

Just be advised that removing the rev limiter can seriously damage the engine. You might want to speak to Mark 99STS before you do anything like this, he discovered some interesting information about the NS engine management system and consulted with a famous guru during the process...

http://caddyinfo.ipbhost.com/index.php?showuser=158

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Most chips that I'm aware of dont remove the rev limiter. They usually raise shift points, remove speed limiters & firm up shifts while doing their air/fuel ratio thing.

I had a chip in my old Explorer and THOUGHT it improved performance. Never had it dynoed. And the premium gas negated any MPG gains. Just a "feel good" mod.

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Not only removing the rev limiter, just raising the RPM limit can cause damage or if the engine leans out at high RPM it can cause destructive detonation. Now I know that they CLAIM they can modify the air/fuel curves, but from what I understand from Mark, there are ALL kinds of firewalls built into the NS fuel management system to prevent hacking. Here is reference to the story on the other board, the thread was removed from that board

http://caddyinfo.ipbhost.com/index.php?sho...c=7890&st=0

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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There will always be someone out there with a magic bullet, who's smarter than the GM engineers, right?

Jason(2001 STS, White Diamond)

"When you turn your car on...does it return the favor?"

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Not only the rev limiter, just raising it can cause problem but if the engine leans out it can cause problems. Now I know that they CLAIM they can modify the air/fuel curves, but from what I understand from Mark, there are ALL kinds of firewalls built into the Caddy fuel management system to prevent hacking. Here is reference to the story on the other board, the thread was removed from that board

http://caddyinfo.ipbhost.com/index.php?sho...c=7890&st=0

Thanks for everyones input. I have reconsidered the reprogramming. :):)

Not just the cost, which would be considerable, but the whole aspect of just doing it. Morally and otherwise. I still have a couple of morals left even if it may not seem that way. :):)

I just don't believe they can do THAT much better than GM and FOR SURE I wouldn't want the fuel to go lean at high RPM. I used to drag race a Hemi Cuda, a 340 Duster, a 454 Chevy and others, and later played around with a couple of dirt trackers. I have had a little experience with mixtures and jetting carbs. :)

If you could safely and reliably get more power / better economy / better WHATEVER, it only makes sense that GM would DO IT. It would help their CAFE standards. :)

I really don't need it to rev higher, it goes to 6500 RPM now. Will hit the speed limiter while still in 3rd gear and gets around 20 MPG on the highway, <depending on speed> All of that in an over 2 ton vehicle while riding in nice quite comfort.

The only thing that still bugs me is the 123 MPH thing when the other one would do 130 MPH. But I would probably only do that once or twice just to see if it would. I wouldn't even want it to do OVER 130 because of the tires.

Of course I could spend a bunch MORE money and put Z rated tires on it. :)

I am going to leave it as is, except for maybe some better sounding mufflers.

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It would be nice to try their tune, with a before/after dyno to see objectively what effect it has.

I love factual data.

Bruce

2016 Cadillac ATS-V gray/black

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If you could safely and reliably get more power / better economy / better WHATEVER, it only makes sense that GM would DO IT. It would help their CAFE standards. :)

I really don't need it to rev higher, it goes to 6500 RPM now. The only thing that still bugs me is the 123 MPH thing when the other one would do 130 MPH. But I would probably only do that once or twice just to see if it would. I wouldn't even want it to do OVER 130 because of the tires.

Of course I could spend a bunch MORE money and put Z rated tires on it. :)

My statement above comes from my discussions with Mark, he and his engineer were very impressed by the GM engine management system and he especially highlighted the systems firewalls and defaults, it was necessary for him to completely fool the system.

The other thing about this is a statement you made, that "if GM could do it, they would have done it", their HP specs from 93 to 07 for the normally aspirated Y and 9 engines have been more or less flat at 275 and 300 HP, if they could safely up the HP I think they would have with other manufacturers biting at their heels..and surpassing them in some instances.. As you say, 6500 RPM is nothing to sneeze at.. GM has done a LOT of dyno testing on this engine MUCH more than any after market supplier could ever afford to do and I am sure GM has destroyed a ton of engines in the process determining its limits and norms. The statement made by the 'tuner' that they would like a 'few cars' tells me that someones engine will serve as a guinea pig for testing and they have not actually seen results yet.

That said, if you could just raise the speed limit from 123 to 130 that would be terrific

I don't mean to discourage experimentation its just that I have been around for awhile and have monitored and seen much discussion about this topic. Hopefully I am not the personification of "you can't teach an old dog new tricks"........ I will believe it when I see it.

I have sent a note to Mark for him to give his experience on the engine management system and what he found, his input will be interesting here..

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Unless Westers has proven test results with whatever it is they want to do, I wouldn't get involved. It sounds like they haven't actually hacked the Northstar yet so it remains to be seen if they can. I would be interested in seeing dyno results if there are any available.

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Hi all.

I've been off the board for a long time. (kinda doing my own thing in uncharted waters). Body By Fisher sent me an email and I thought I would throw in my 2 cents.

When I first put in the piggyback computer before it was turbo charged we took it to the dyno and played with the AFR. The computer was real time so we didn't have to reflash and wait for results. We went from very rich to very lean with virtually no change in HP. I emailed our old friend from GM and asked why. The combustion chamber on the N* is so efficient that a wide range of AFR will not affect its power output. The only way to gain more power is to get more air in and more air out. Meaning a cold air intake along with an open exhaust or going the route of super or turbo charged. I just can't see how this guy is going to gain 45hp unless he is messing with the timing and that can get dangerous if running lean. Changing shift points is not going to chang HP.

I am not saying I am "the expert" but I have been messing with this stuff for the last 5 years and have tried it all with proven track and dyno results and I'm telling you the only way to get more hp is to do what I said above. Sorry but adding more than 20hp with intake and exhaust will take a lot of time and money.

Been there and still doing that.

MARK 99STS

TURBOCHARGED

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Thanks for the input Mark! Hope you are navigating those waters to your liking! I hope the mortgage problems have not hurt your business. I just took an analyst position for a top real estate advisory services firm in Manhattan, if your travels bring you to NYC, give me a yell.. Mike

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Thanks for the input Mark! Hope you are navigating those waters to your liking! I hope the mortgage problems have not hurt your business. I just took an analyst positon for a top real estate advisory services firm in Manhattan, if your travels bring you to NYC, give me a yell.. Mike

Hi Mike,

Yeah my business is hurting right now but I'll survive. Send me a PM if you have a new cell # so I can give you a buzz some time.

Thanks

Mark

MARK 99STS

TURBOCHARGED

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Mark undoubtly you are the GOD about this

however even if it doesnt net us the 45 hp

it will allow us to use the stock computer to add a s/c, turbo, new heads, cams, pistions, remove the speed limiter on Y cars WHATEVER without having to go the very difficult and expensive route of the piggyback way

ya know what i mean?

i plan on building a set of custom headers this summer at my shop, i already have cat back done fully and i think it sounds alot more "muscle" than the corsa which is more refined

do i believe it will net 40 hp? on a stock car nhttp://caddyinfo.ipbhost.com/index.php?showtopic=13034&st=15&gopid=100432entry100432

Westers WILL HACK THE NORTHSTAR NOW! - CaddyInfo.com Cadillac Discussion Forumo, with an exhaust and intake maybe in total with mods youll gain about 20-30 hp.

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The Twins

1997 ETC & 2003 STS

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With a quality exhaust and a quality intake, including a computer that can accomodate more airflow, I think 20 hp would be a reasonable guesstimate.

Jason(2001 STS, White Diamond)

"When you turn your car on...does it return the favor?"

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it will allow us to use the stock computer to add a s/c, turbo, new heads, cams, pistions, remove the speed limiter on Y cars WHATEVER without having to go the very difficult and expensive route of the piggyback way

ya know what i mean?

Unless you have the ability to change the AFR yourself like with the piggyback it won't do any good because there is no "universal "program for fuel if you are going the route of s/c or turbo.

You can't just get a reflash and expect it to work in all cases. It is good for a stock setup, but that is about all.

Secondly if all you are are going to net is 20-30hp why spend the extra money when adding an open exhaust and intake will do the same thing? Already been proven with dyno by Corsa to add 20hp.

MARK 99STS

TURBOCHARGED

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  • 3 weeks later...

Howyadoin,

I don't know this guy, but it seems like he's quite adamant about collecting a bunch of VIN numbers and ECM service numbers, almost to the point of ranting. It seems a bit odd to be demanding that kind of information without having the person's hardware. Almost seems akin to the guys that troll for e-mail addresses in newsgroups by offering something free, "just give me your addy and I'll send it to ya". Then there are a raft of "Me too" posts to the group with email addresses. It's a bit creepy, IMHO.

Is there anything that could be done with a Tech 2 to a car using a different VIN and service number? Changing mileage in the IPC or something?

-Mark P.

Salem, MA

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"Refined Sugar" - '96 SLS, 175K

"...the Caddy is dedicated to relentlessly -- and comfortably -- converting time into distance." -J.J. Gertler

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