The above post speaks the truth. i have been in this debate sooo many times......

i have a stage 2 tune with a 2.79 pulley and ebay intake and dynoed 255 hp 240 trq with a 12.5 a/f

i will say that i am right along the jagged edge and wouldn't push it any more. that being said i went to the track hammered on it all day and had 0 problems.

i JUST got back from a 1500 mile trip from Michigan to Georgia and back and she ran like a dream...

too much vibration......but thats from the tranny mounts

i have dynoed at same place since stock

after stage 2 i was pig rich.

 

A 12 afr is pretty high for these cars, considering the stage 2 tune puts you in the high 10s, piston pertection, just because you afrs are that still doesnt mean your idc is max, and on stage 2 injectors, and stage 2 tune on a 2.79 i really wouldnt call that safe.

 

psykostevo lives in arizona sorry dude but if u have someone with hptuners he will most likely mail u a base tune. he does awesome work

 

you're missing the part that IDC is a calculation. not exact. the car does not read idc. hpt does when YOU set the file up. 20.0 millseconds on injector time is static, which comes out to be 116.6XXXXX on duty cycle, per calculation. my 42's are runnin 15.7 msec with the 2.8 and water injection. not the greatest, but within reason. the stock stage 2 42's suck. period.

http://www.stealth316.com/2-calc-idc.htm

 

well like i say is done deal!! i got tune and it drive like a beast!!! it was fun to see the mpg to 34.5mpg becuse i was driving so careful ....thank you everybody!

 

I agree. you want to be about 11 afr. I have not done it but judging on stock setup with 2.79 pulley it appeared to be safe if you run at 6500 RPM max. lean it out abit and your more than safe. And before you go...."why would you want to reduce your RPM's? were trying to go fast!" ..... I did my fastest pass shifting this early. 5000rpm to 2nd and 6200rpm to 3rd.

that is just too lean IMO. But I guess you have not blown up .......yet.....LOL just kidding. But I wonder about the ability to produce power.

 

Good to hear.

 

Not only have I not blown up, but I have no knock retard or signs of knock on the spark plugs, that I check every 1k miles. I guess it's a matter of personal choice. I don't see the reason to got lower than 12 AFR. The only reason I know of is to prevent detonation/spark knock and if thats not apparent then why go lower.

I also had a secondary knock sensor device installed into my car during tuning that was more sensitive than the STOCK PCM (still used the stock sensor) and I never saw an issue with knock. The thing would read knock if you hit a large bump.

 

how about power?