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Hello all! I have had my 1995 Seville STS for about 2 years. I have done a slew of repairs however it's time to put a little performance in to the old puppy. Wondering a few things.

a) What would you recommend for a CHIP to increase power. Where can I get one? Easy to install? Good bang for the buck? Cost? etc?

b) I was looking to get rid of the stock intake and put on a K&N intake however they dont make any!!:banghead: Weird I know. Anyone have any advice? Again cost, where I can get it? Do I have to "mcgiver" one up. Seems no company makes one for this car.

Thanks for looking and a million thanks for the answers.

Regards,

Chris:cool2:
 

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You might want to search for "cold air intake". I know I have seen it discussed before.

Who is the one that has done alot of modding...is it MARK99STS?

About the chip...I had once called Superchips about this. At the time they were the ones to do it. However, I recently went to their website a few weeks ago and cadillac cars weren't listed. Give them a call to find out for sure.

They say they add performance. Some have posted that they don't. It will definately remove the speed limiter if you have one.
 

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No Chips exist for the Northstar now, nor are they likely to exist ever.

GM, for whatever reason determined that the information in the Northstar Engine Module was/is too proprietary to assist chip manufactures like they did for the LS1 series of engines where chips, super charger kits, etc. do exist...

Big mistake in my (and many others) opinion.
 

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I've seen chips for the 4.1, 4.5, and 4.9 engines as well as the LS1 variants that came in the Escalades...

But I have never seen one for any Northstar OBD I or II...

Threads like this come around about once a month, everyone claims they exist, or that they know someone who knows someone who's best friend's uncle has one... And that they generate an easy additional 30, 40, 55 HP!

But all of the "big" chip manufacturers web sites avoid N*s like the plague!

Arrhh!
 

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A couple of years ago I looked into it with Superchips. I called a local Superchip place and the gentleman there said it would run somewhere close to $200. He asked me to either bring in the car or get a number off of the current chip. Most of the views I read about it said the best part of the upgrade was the removal of the speed limiter. Nobody proved any real HP gain, just alot of "seat of your pants" gains. (Is that what they call it?) I didn't go though with it because talk at that time was that it wasn't worth it. Bb0b had some input on it. I think that helped convince me.

In the end, even if they used to be available for OBD 1, they aren't anymore.
 

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thedj said:
Hello all! I have had my 1995 Seville STS for about 2 years. I have done a slew of repairs however it's time to put a little performance in to the old puppy. Wondering a few things.

a) What would you recommend for a CHIP to increase power. Where can I get one? Easy to install? Good bang for the buck? Cost? etc?

b) I was looking to get rid of the stock intake and put on a K&N intake however they dont make any!!:banghead: Weird I know. Anyone have any advice? Again cost, where I can get it? Do I have to "mcgiver" one up. Seems no company makes one for this car.

Thanks for looking and a million thanks for the answers.

Regards,

Chris:cool2:

You probably won't see any real gains from a K&N or a modified intake. This topic has been covered many times here. The intake is well designed and does not limit the power of the engine much if at all.

If you want to boost power, look toward a bigger exhaust and then maybe an intake could help a little bit. Beyond that it's nitrous time. Any way you go, it takes a few buxx to squeeze a few more ponies from the N*. It's a pretty darn good setup "out of the box."
 

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Ur7x, no offense but you must not have been paying attention if you've never seen a chip for an OBDI N*. Domestic Performance and Fastchip are the places to go.

Like I've said in the past though, I don't trust a chip to give me much extra power on a N*.
 

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Fastchip no longer lists North*s on their web site...

"Performance chip"... Hmmm
I've never heard of this company, nor can I find their home page...
 

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Thanks Eldyfig,

But that wasn't my question... Domestic performance sells the chip, but who manufactures it? Just about every other part on that site documents who manufacturers the part... But not that chip...

Don't get me wrong... I would LOVE the aftermarket to step up and produce quality Chips and perfrormance bolt-ons for OBD I and II Northstars (and shortstars)...

Oh, wait a second... Westers Garage makes the chip... Never heard of them... This requires a little more investigation... They make OBD II chips for fords too...

Things are looking up!
 

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I'm pretty sure fastchip used to list the Northstar. It does also say "If you're looking for something not listed here just ask, we have probably done the program for an application like yours." So I bet they'd still do it.
 

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mcf1000x2003 said:
Also i was wondering is it true that the 300hp northstars in the STS and ECT only put down 225-235hp to the wheels like on the dynos on caddyinfo
I don't know, but wouldn't be surprised at all... The 300HP is a flywheel number it is easy to loose 20%-25% through drive-train losses... Especially through that monster automatic transmission... But don't panic about this, most automatic cars loose about 20% through the drive-train and manuals loose 10-15%...

Of course this doesn't account for the fact that GM totally under rated the output of the LS1s which will easily put down "flywheel" numbers at the rear wheels...
 
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