performance chip
Thread Starter
Cruising
Joined: Jul 2009
Posts: 13
Likes: 0
From: North Eastham Ma.
performance chip
I was looking at E-Bay to see what was out there and I keep seeing this chip for $25. Guaranteed to make hp. Anyone try a chip in a LT4. If so what type of result?
Burning Brakes
Joined: May 2009
Posts: 787
Likes: 1
From: Hialeah Florida
ignore it...none of that crap works. You get what you pay for...as stated above a tune will unlock horsepower...and for giggles purchase that chip and open it up inside you will be shocked at what they are claiming makes horsepower...
Safety Car
Joined: Jul 2008
Posts: 3,966
Likes: 4
From: Made In America
St. Jude Donor '10-'11
AHH, AHH, ACHOO! Sorry but I am allergic to bull****.
That chip is crap. Get a custom tune if you want performance.
Anybody got some tissue? I just sprayed snot all over that generic chip.
That chip is crap. Get a custom tune if you want performance.
Anybody got some tissue? I just sprayed snot all over that generic chip.
Le Mans Master
Joined: Oct 2004
Posts: 6,314
Likes: 508
From: South-central Missouri
Some features of a custom tune...
Mine is a custom chip with some pretty nice features...
Idle control (something we LT5 drivers have to deal with on a stock (90-91) chip.
)
Cooling fan control. Mine (both) come on at about 210 and shut off at about 205
CAGS is a thing of the past.
Timing curve is modified and there is more advance - mandating premium fuel too, but well worth it!
WOT fuel to air mix is held very close to optimum across the entire RPM range.
Anti-backfire for header use
Beyond LT1/4 stuff, mine also is set to run w/o secondary throttle plates (again an LT5 thing) and operate all 16 injectors at the same time.
It runs soooooo much better than it did with the stock chip. Course it cost me a bit more than $25 (more like 17x more), but the point is, you want to have some specific ideas on what you want from a chip. Someone promoting simply "more HP" with a 'one size fits all' chip is full of it! And, FWIW, the LT4 has an E-prom in it. So, it will accept a "flash" tune w/o requiring you to touch the ECM.
P.
Idle control (something we LT5 drivers have to deal with on a stock (90-91) chip.
)Cooling fan control. Mine (both) come on at about 210 and shut off at about 205
CAGS is a thing of the past.
Timing curve is modified and there is more advance - mandating premium fuel too, but well worth it!
WOT fuel to air mix is held very close to optimum across the entire RPM range.
Anti-backfire for header use
Beyond LT1/4 stuff, mine also is set to run w/o secondary throttle plates (again an LT5 thing) and operate all 16 injectors at the same time.
It runs soooooo much better than it did with the stock chip. Course it cost me a bit more than $25 (more like 17x more), but the point is, you want to have some specific ideas on what you want from a chip. Someone promoting simply "more HP" with a 'one size fits all' chip is full of it! And, FWIW, the LT4 has an E-prom in it. So, it will accept a "flash" tune w/o requiring you to touch the ECM.
P.
Le Mans Master
Joined: Apr 2000
Posts: 5,713
Likes: 105
From: Manassas VA
The chip is not removeable on 94 and up vettes. So for your LT4 the computer has to be reprogrammed.
That aside, there is small gains to be made on a stock motor. Usually, it involves changing the factory t-stat (180 degrees on LT series motors) to a 160 degree t-stat. Basically, you lean out the mixture a little and advance timing a little along with lowering the operating tempature of the car, via the t-stat and the fan on settings in the program.
The factory built a very safe tune into the car for both emissions and life of the motor. For performance there is a little room for improvement.
If you are serious about doing it, check with a reputable company such as pcmforless.
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Safety Car
Joined: Jul 2008
Posts: 3,966
Likes: 4
From: Made In America
St. Jude Donor '10-'11
Turn the fans on sooner, retard the timing, few little minor things. Not much. My car is very mildy modded(no cats) but I did a custom tune and it runs better with the chip. You can always get it reflashed for 50 dollars.
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Remember the stock tune has to accomodate all drivers; your parents going to the club on Sunday and you who wants to thrash it a bit. Has to be the best of both worlds.
http://www.fuelsaving.info/chipping.htm
