I have a stock 06 LQ9 and the injectors are going static .. Im commanding 12.4:1 in pe ( no I havent got a wideband yet, so yes its " hacked up " ) But Im not getting how this happens ?
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I have a stock 06 LQ9 and the injectors are going static .. Im commanding 12.4:1 in pe ( no I havent got a wideband yet, so yes its " hacked up " ) But Im not getting how this happens ?
Yeah 24lb injectors are very "light" from the factory for a 6.0
So I should get some new injectors then ? aha
Yes!
And a wideband so you know the AFR
I was tuning this weekend, and the car ran out of injector at 5800 rpm, within a few frames the Inj Duty cycle shot up and we were at 14.9 Afr,
that was the last run till customer gets bigger injectors.
Wideband much much cheaper than engine repair.
Yea .. ive been creepin up on this IDC issue for awhile now , more tune = higher IDCs it appears - curious to whats gunna happen with new injectors haha.
Any suggestions for what injectors to run ?
Tuned many LQ9's, and never came close to 100% idc. First install a wideband, cuz just looking at your 02 mv, your too rich. Also verify the fuel pressure at wot.
Russ Kemp
Was hopign someone would chime in with some insight. My PE was 12.4 , ive moved it up to the tune of 12.8 just gotta take it for a ride.
and yes the wideband is on the list of shit to buy.
And why are you using a 2000 LQ4 truck tune?
Russ Kemp
because I made the fatal mistake of going with an 00 pcm when I wired the truck for the engine a few years ago.
Ive got an 04 PCM with the TAC and pedal sitting beside me , just waiting on the TB and ill be installing it all.
I hate the 00 pcm, garbage .
that its almost as important as a wideband, i always, always check fuel pressure at WOT, its part of my tuning check list, it saves so many headaches, dont ask me how i know, a lot of time the high fuel injector duty its caused by low fuel pump pressure from old tired fuel pump, so check it to just to make sure.Quote:
Originally Posted by Russ K