running rich?why

[vv8]

02's are reading 940 to 950 at wot and the stft are reading -10.1 and long term reading -1.6 is there a broken gasket or just because i put in bigger injectors without getting retuned for them?

[RedHeartbeat]

I would guess the bigger injectors are causing the issue.

[vv8]

thats all im hoping for, that way i don't have to pull the injectors back out again untill i put the heads on.

[RedHeartbeat]

Do you have HPTuners or a programmer? Sounds like you need to scale down your injector pulse width.

[vortec350]

The IFR (injector flow rate) VS. Map needs to be increased but I would get with Allen about it and see what he says!

[vv8]

yep he will be retuning the truck after the heads are on. thanks

[farmtruc]

Originally posted by vv8@Jan 11 2006, 10:15 PM
yep he will be retuning the truck after the heads are on. thanks

Not sure what size injectors you put in, but if they are bigger, that's why it's rich.

The ifr table needs to be adjusted, plus it's about time to scan your truck and see how it's running, time for a retune.

later,

allen

[vv8]

I put the 8.1 31# injectors in, ok got to get some good readings on the way to work today STFT anywhere from 0.00 to +3.60 LTFT -14.81 on both sides at wot they all go to 0.00 but the 02's are reading 955, yeah allen i will get it tuned after the heads are done and on, takeing them to the mechine shop tomorrow for alittle more milling .020 for a total of .033.