so ive been thinking about reprogramming the E-prom on my 92 z28 305. anyone have any suggestions? i was kind of leaning toward performance resource but i dont really know yet.

what kind of gains can i expect? what are the downsides? will it hurt my mileage a whole lot? will it take away from the life of my motor or anything like that?

also, my car is pretty much bone stock right now but lets say i finally break down and buy the headers and exhaust and possibly a different intake, will the chip have to be re-burnt to adress the new modifications?

 

First off, to ge the most out of a burn, you are going to need to learn how to do it yourself and experiment, or go to somewhere like www.pcmforless.com
Don't get a JET or Hypertech chip, they will give you less than a tenth of a second off your 1/4 et.

At PCM, they will burn a custom chip to your current setup. There are tons of testimonials on that site that are nothing but good, and dyno results to boot.

Second, you will see little to no gain with a chip on a stock application. I say, just save up for headers and a catback. You will see the most gain out of that, at around 20-30hp, and it will also sound nice and save some weight (those stock manifolds are pretty heavy compared to headers)


Bottomline, and others will tell you too, save the custom chip burn until after you do something big like heads and cam, or intake, etc. That is where you really need to start adjusting your fuel table.

_Clark


http://www.pcmforless.com/index.php?...id=706&catid=8 actually, I found that. 14hp gain, but I would still do the headers and exhaust first because they may need to take that into consideration when tuning.

 

umm you can get huge gains on a stock motor,

I have basicly just exhaust and K&N,

I run a 160* stat, 94 octane fuel, and after about 12 hours of logging and tunning my car is way faster,

I can put huge power increase on a MAF 350 just by putting a corvette bin in it,

you can change your throttle % for where you go into PE and your A/F ratio is yours to play with,

run about 12.5-13:1 vs the stock 14.7:1 and you'll see some big power gains

with more fuel and a lower running temp you can add alot more timing,
my bottom end torque is went up significantly

if you got auto you can play with your torque converter lock and unlock makes you way faster out the hole

 

does it have any effect on reliability?

 

What were stock times?
What were the times after tuning ??

 

I am waiting for all my mods to be installed. After all is installed and I get my car Dyno'd I will have a chip burnt from www.pcmforless.com based on the print out from the dyno.

 

don't know this years times,
ran a 15.2@93mph last year with a 3.45's

blew my 3.45 so I'm back to the stocker 3.08
so far I've raced a modded 99 mustang GT and ran nose to nose with him
also pulled away from a 350 Camaro thats pulled a 14.9@96mph this season

There street legals at my local track this Friday, if I can get off work early enough I'm heading out

 

The stock chip is way rich at full throttle, like 11:1 ratio. 14.7:1 is the ratio for regular driving.