You force it into open loop and see if it still does it?

 

Just drove around town died a few times and didn't wanna start
Cruised on the hwy, Come to a stop push the clutch in goes dead
Not seeing the lean issue anymore
hunt is from 900 to 1500


Just popped a p0341 camshaft sensor performance and p0172 system too rich

 

Same type of thing was happening to me and I think it is becaue the large injectors are hard to tune at idle without a BRFPS? but you have that I think so idk what the problem would be

 

What kinda vac you pullin at idle?

 

5-7in hg (mechanical gauge)

 

Almost ready to drop stock cams in ughhhh

 

Issue isnt the cams, does the timing go negative at idle?

 

Ill check tomorrow, paul my tuner is looking into my issue

 

Raising the idle helped mine

 

We tried that, randomly while idling we get a full lean condition and the fuel trims get all wacky

 

Trim your MAF

 

you should have more manifold vacuum then that

 

agreed even on my stage two cams i had around 15in of vacuum

 

while we're on the tuning subject, on my old tvs tune for the idc 1000s car idled like butter right at 950rpms. did some tuning with joe and found out his tuner cable and interface took a **** while tuning a car on the race track that hit the wall with his stuff in it doing some data logs. Now my car is idling about 1350rpms, when everything in the tune looks to be spot on. Also my car isnt commanding PE until 7500 rpms and even when it does its staying around 1.05 lambda. Has anyone that has tuned a turbo setup seen an issue where the scip sensor which is a one bar sensor is now seeing boost in my hahn manifold? and the pcm is possibly getting freaked out by that? I know some guys throw a voltage code related to the scip sensor but im pretty stumped right now. My lambda error % was like 27% lol. Need to work the MAF as well

 

I believe my idle hunt is causing my issue With seeing low vacuum
Because at wot I'm seeing 21-22psi wot so i doubt its a vacuum leaks
On decell I see 19-20in hg

My tuners gotta work out my maf as I'm maxing it at 7100rpm

 

timing was going negative a bit at idle, didn't really have much of a chance to get that straightened out as the car would barely run after a shut and cool down cycle.
MAf was rescaled
as for idle trims it was -12.5 which of course was not the finished product persay, but we got stuck on the other issue before I got to clean that up more.
I"ve run into a similar issue before as state with infe's car, but his was more random, and it would go back to normal if you blipped the throttle. Still waiting for his motor to come back to the machine shop to clear that up

 

it was pulling even less vaccuum at a smooth 950 rpm idle (was around 0)
Issue started before the idle hunt crap (which started up after messing with it of course)

 

check what the pe delays are
kpa, rpm, etc. what does it show as commanded afr when wot? and as for the scip I've run with and without it and never noticed an issue, just turned the codes off for it so it wouldn't through a cel

 

Ya confused as how everyone else is running 15in hg

 

yeah your car does seem to have really low vac at idle, infe's car was @15hg also

 

Pe delays are all correct. That's to know about the scip sensor was just curious if it tied into everything. Commanded lambda didn't change to .81 until 7500 rpms and sometimes doesn't change at all. And by the time it does, the actual doesn't change because I only have till 8200 to see it change. Gonna try some advice and 0 out tps and rpm, an lower the kpa settings to see if it engages where it should. Because the car is also idling at 1350 with spot on trims and no vacuum leaks anywhere. Wondering if the throttle body is starting to fail who knows.

 

maybe its port velocity with my huge intake and exhaust ports

 

Paul and advise pm Taylor he's got the stage twos idling and driving great with a huge as port job as well. Maybe he can offer some insight to y'all's ordeal

 

here to say, I just placed an order for my TVS I'm just waiting on shipping

 

lol already did seeing if hes got a log to compare too

he had some trouble getting them to idle but sorted most of his issue out