Ok I went to the track last week & got horrible numbers, I had misfires & hickups, now I switched back to the opti (prolly bad coil) & seems the misfires are gone but the car hickups a lot, basicly around 1700rpm in 6th gear on the HWY it has this annoying vibe but its not as bad as before with a dead coil which I presume it was.

But what the hell is with the hickups? if I'm driving & I want to accelarate (mostly highway only) especially in 6th gear I'll give it gas its ok at first, give it a bit more & it hickups & goes again, almost like its shutting off under load, is this mean my TB is too big or cam is too big for those rpms? does it mainly around 1500-2000 rpm & if I try to accelerate a bit in 5th gear just to speed up it hickups a little again but at this time I'm doing 3krpm. Does seems to misfire at high rpms although after driving for a while it did hisitate a bit at 6k+ but I might have hit the rev limiter I dunno, other then that if I floor it, she goes pretty smooth, but I can't drive her. I have stock 3.42 gears I dunno is this normal? thanx guys LMK this is been going on for so long I have to finally turn to this board for help, please.

 

TTT

 

Sounds a little like cam surge. Mine does it when the converter locks at 60mph.

 

thats what mine did with the converter locked up and under load, and if the a/c was on forget it

low rpm + load(ie 6 th gear) + bad opti = hickups / or hesitation

 

well I had the same thing with no opti (LTCC) & now I hooked the opti back up whcih is brand spanking new, prolly 150 kilometers on it only, & its my second opti, the last brand new opti I had the same thing, then I got another one to make sure, same thing, is this annoying thing normal

will gears fix this? how bad was yours guys?

 

Yes gear will fix it since the RPMs will be higher. When mine did it for the first time I though my A4 tranny was about to fall apart, took it up to 70 (2500rpm approx) and she rode like a champ.

 

You can fix some surge with tuning. Usually by retarding the ignition timing in those low rpm areas.

 

Hmm... retarding timing to get rid of it ehh? good call I was adding I think, I'll hook up my crane box, & try turning the Retard **** 0-20* up to retard more when I feel its lurching & see if that takes care of it, if it does, I'll make not exactly how much was required at what RPM & then edit the tune accordingly, cuz it gets annoying with LT1 edit all the time