hi, sent an email to fastchip no reply, called today got put on hold to long for long distance toll. what other options would yall recomend?

 

Well... it would help if you told us what you have and what you need.

 

DIY!

 

yea ok. wanting to get a eprom burned for my `90 6speed. the only stock parts on the motor are the heads. mods in short, 383, bigger cam, superram intake, 58mm tb, ram air, long tubes, gutted cat, borla, msd 6a, 8.5 wires. running rich, stumbling, some black smoke. read a post that had a link to the gm efi how it works, and it stated exactly what my car is doing and why due to the mods and the limits of the factory ecm to compensate or understand.

 

http://forums.corvetteforum.com/show...77&forum_id=48

 

thanks for the info. im not looking for extra horses or a one size fits all chip.the car will take an ls1 in open loop. which is the problem. the car is running rich. closed loop and with the 02 plugged in it will stumbal, less richer and puff black smoke. from all iv read and tried i need a custom chip.

 

I am very happy with the tune I got from www.pcmforless.com Mine was very rich after the cam install and Alvin straightend that out.

 

Try Formato's Faster PROM's. They burned mine,works well,also recommended by Lingenfelter Performance Engineering.

 

Ragtop after u burned the chip from pcmforless and u recommened
i did tried his chip last week for my highly modified 85 man this thing
fired up on first crank with no rich or lean condition infact my
gear shifting problem was solved too,
Alvin is sure very nice and go extra mile for anything.

 

Whatever you do, DO NOT consider ski_dwn_it. I suffered tremendous expense to have engine damage repaired.

Get yourself a beer and read this thread: http://forums.corvetteforum.com/show...47&forum_id=82

Consider yourself forewarned. This ain't no drill. If something goes terribly south in the process, YOU'LL be the one holding the bag with this guy.

 

Are you running stock injectors? If you have replaced them with larger ones, the first thing you'd need to do is burn a PROM with the correct injector constant or else the engine will run pig rich.
After that you' need to hook a scanner/laptop (this is my preferred) to it and see what the BLM & INT are at idle. If they are close to 128 (120-135..ish), its time to take it for a drive...moderate drive and see what the BLM & INT are. You are shooting for 128, also pay attention to knock counts while driving. Log your data (Moates' software is great for this), post up your log files and start asking questions on where to make changes and what they'll do.
Of course the absolute best way to do the tune is with a W/B O2 and dyno..but we all don't have that option.
In short, doing it yourself is the best way (short of the dyno) to get a good tune, since you have the car and can see what the changes to the PROM are doing for or against you.
If you are interested in going this route I could build an ALDL cable complete with ALDL connector (and instructions on how to power and hook it up) and send it off to you....
The only cost to you would be to post your progress, mods to the bin and possibly share the finished .bin here for others to look at so they can get an idea of how/what is done to tune.
Let me know if you are interested..The ALDL cable is very cheap to build..on the order of $4, so don't worry about costs. The ALDL adaptor is made from scrap parts I have laying around..believe it or not.

 

steve you may have gotten' ed wright at a bad time. i called wednesday night and talked to john. then on thursday i desided to get a chip (instead of learning to burn my own)because my car has been it the shop for 6weeks (new 383 stroker with nitrous). i called and the line was busy, called back on hold for 1 minute then order the chip at 11:00am. i just called at 3:30 the the chip was sent out yesterday. i had them over night it and it should be here before 6:00pm.. i hope the chip works. i bought the car and it had the hypertech in it and the car was running real lean so we will see good luck