Wrong buddy. One im built so i can handle the 12.5, 12.5 is at a low boost low rpm, 11.3 is at wot so remember that!!! I am not to rich and i am not to lean, right where i should be!!!..... i do not get kr, i am actuall getting no kr with my timing. Ever car ive tuned i give them a 11.3 afr at wot, for safety and reliablitiy. aND I DO MAKE GOOD POWER. So my tune is great

 

I'm agreeing with you. 12.5 is by no means lean for low boost and low rpm. even for stock engines. hell, the stock PE is rediculous. it doesnt even richen up until about 4500rpm.
I run about 12.8-13.2 until 3000rpm.

 

yeah cool, i dont understand some people tho, 11.3 is to rich and 12.5 is to lean!! LOL maybe 12.5 under wot is to lean but its still ok with direct injection and so forth.

 

Run meth and you'll be able to run even more timing

 

ok so i played around with my tune a little bit last night im commanding an 11.3 afr and i added a degree of timeing and took off the tq management, so far im not getting any knock and the car pulls harder then befor. my question is im commanding 11.3 but its running around 11.7 under wot. from what i understand this is still safe but i want someone to confirm it for me
my PE enrichment rate is at .0325 which is how fast fuel is added should i increase that number to get the desired afr? i was up till like 5 am on the hptuners site

 

I set my pe enrichment rate to .4 or .5
Many say to put it above 1.0 but in my experience it doesnt help anything except to induce some rich tip-in.

11.7 actual afr is relatively safe. The fact that you are commanding 11.3 and getting 11.7 just means there is some error in your maf table. If your fuel trims are dialed in within 3% error, it's most likely the top half of the maf table that is scaled 1 or 2 % too low.

 

so you know nothing about tuning? ok

 

Hey bro. Do not command a afr of 11.3 in the stocich what u need to do is log and log and log. Stft and ltfts. And also maf. I actualy have my pe enrichment rate at 1.5 and my afrs do come fast but I like it. You are prob about 8-10-% off on your ve table. Just tune it and u will be fine. Have u ever posted ure tune so some one can look at it and a data log if not try and see if some one will look at it for u amd make sure you hit as many cells in the ve as posible

I'll jump on this one. At a rpm of 3k and 5 boost I would do a leaner afr but I would also do a richer afr for torque. But I like my results better with my setup of 12.5 at low boost and 11.3 at wot

 

did some more loging today and i set changed the timeing last night to 20degrees in a small area of the table, im still only seeing 18 degrees and it seems to be pulling timeing as the iat2s after 3rd gear there up in the 150s but it was 90 degrees out tonight (heat exchanger going in tomorrow hopefully) and the timeing would come down from 18 to about 16 by the end of 3rd im not logging any knock tho and the afr starts out at 11.3 (right were i want it) and works its way up to about 11.7 in the higher rpms

and chevycobaltss3 i didnt change it on the stioch table its the eq raitio table.

someone tell me how to post my tune and log file on here so you guys can look at it and help me out
i dont understand the maf and fuel trim calibration so i dont know how to change it

 

do this, my email is cali_motocrosser@yahoo.com, send it to me ill look at it. i wont be able today because i am tuning a ss in indiana, hes a member on here. So your maf or ve is a little out of wack. make sure you send me a log of your car doing some pulls, but try to get your h.e on first before you send because youll havea lot of heat. so your fueling will be off a little

 

just emailed it to you thanks for takeing a look at it

 

i will look at it as soon as possible may be tomorrow. sorry bro!!

 

Then what would you recommend for afr at 0-5 psi and < 3000 rpm?

 

Iv been tuning forever bro and a afr of 12.5 is not lean for a boost of say 5-8 and about 3k or less rpm my upr Rome and higher boost is 11.3 . I'm not to rich and I def am not lean FREW . Lmao