Zacks94Z

Looking to jump up the gears in the old Camaro from 3.23s to 3.90s. Would I benefit more from a PCMforless mailed tune, or a dyno tune.

bufmatmuslepants

iTrader: (3)

Get a cable and download the software and do it yourself.

Catmaigne

iTrader: (6)

^ This. The aldl to usb cable is only about $60 and you can use Tunerpro/Winflash to correct the speedo. I think there are only 3 values in Tunerpro you have to change.

http://ltxtech.com/forums/showthread...5-Obd1-Version

cardo0

IMHO a retune is a good thing if u can afford it. My stock tune was getting a little wacko after 20 yrs. $200 PCM4less and 11 days turn around and worked great for me. Dyno tune gonna be more like $500 min.

I believe the only was to correct the speedo will be a tune/software unless u want to run huge tires.

cardo0

Catmaigne

iTrader: (6)

What? Your .bin isn't going to change itself after 20 years unless your PCM or the flash memory inside is defective. Your car should run just as it did when it left the factory because the stock parameters are just that... stock. Anything out of the ordinary is an indication that something is wrong mechanically.

cardo0

Try some welding on your car without disconnecting the batt.

SES light comes on - EGR code (41?, 42?). Cooling fans run at weird times than previous.
Cant even hear my fans now and no SES.
PCM4less made it better, thats a fact Cat.

bufmatmuslepants

iTrader: (3)

Cardo you probably benefitted just from rebooting your PCM as it loaded the tune, coulda just disconnected the battery for 15 minutes and done the same thing.

cardo0

U dont think i tried rebooting the PCM more than once. Your probably assuming and wrong again.

cardo

Catmaigne

iTrader: (6)

Regardless of whatever nonsense you were doing to your car when your PCM crapped out, a tune doesn't degrade. Having a tuner alter OP's tune for a gear swap is a gigantic waste of money.

cardo0

$200 is a gigantic waste of money?? WTF??

With new gears, shorty headers, 2500 stall, CAI, underdrive pulleys i dont think so. In fact a tune would be my next "bolt on" mod.

cardo