No acceleration even at WOT
Thread Starter
Teching In
Joined: Jan 2015
Posts: 43
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From: Fort Bliss
So i went ahead and bought the MPVI2 because I needed to see what was going on for myself so here is the tune that the car currently has and also a log of a pull max RPM i could get was 1900 while flooring it and TPS was reading 0 the entire time so something obviously isnt right any help is appreciated
Last edited by demontrey; Aug 9, 2018 at 12:15 PM.
10 Second Club
Joined: Jan 2010
Posts: 2,317
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From: Hurley, VA
I can’t see rhe tune since I’m on my phone but are you confident the wiring is good. Technically since you have a truck harness and should be using a Fbody operating system are you positive the Yukon pins and Fbody pins match and the tps is the only difference? I would email the tuner and ask if he did a write entire with a Fbody operating system. Sounds like your still on the Yukon operating system or the pins aren’t where they’re suppose to be.
Thread Starter
Teching In
Joined: Jan 2015
Posts: 43
Likes: 0
From: Fort Bliss
I can’t see rhe tune since I’m on my phone but are you confident the wiring is good. Technically since you have a truck harness and should be using a Fbody operating system are you positive the Yukon pins and Fbody pins match and the tps is the only difference? I would email the tuner and ask if he did a write entire with a Fbody operating system. Sounds like your still on the Yukon operating system or the pins aren’t where they’re suppose to be.
10 Second Club
Joined: Jan 2010
Posts: 2,317
Likes: 20
From: Hurley, VA
isn’t that 03 and up which is drive by wire. I would attempt a write entire with a Fbody operating system or a 99-02 truck. I’m in no way a expert but If your still on a dbw operating system I don’t see anyway tps can work.
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Are you absolutely sure that the throttle body is actually opening fully? I accidently had this happen once, the cable got caught and though my foot was down, it was opening like half way causing it to just stop revving, it would just fall on its face, felt like a soft rev limiter. This happened on my third gen. I again had this happen on my ls1 when the cable wasnt properly adjusted and i was getting 80% pedal down.
Thread Starter
Teching In
Joined: Jan 2015
Posts: 43
Likes: 0
From: Fort Bliss
Are you absolutely sure that the throttle body is actually opening fully? I accidently had this happen once, the cable got caught and though my foot was down, it was opening like half way causing it to just stop revving, it would just fall on its face, felt like a soft rev limiter. This happened on my third gen. I again had this happen on my ls1 when the cable wasnt properly adjusted and i was getting 80% pedal down.
Thread Starter
Teching In
Joined: Jan 2015
Posts: 43
Likes: 0
From: Fort Bliss
just to update on this thread the issue is fixed and as suspected it was a bad tune. The ETC had not been disabled on the tune, so i bought an MPVI2 and fixed it myself i will be talking to Jessie at Wait4me about why he lied to me about fixing my issue but thats a separate matter. Also to anyone thinking about doing business with him i would recommend just avoiding him like the plague.