jrw9574

I have an 1989 5.0 HO with 70mm throttle body, bbk ssi intake. crane 2030 grind cam, underdrive pulleys, headers, h pipe, no cats, flowmaster mufflers. I had a shop put in a jasper racing tranny (AOD), I have also had the heads shaved a tenth. i have stock injectors, stock fuel regulator, and (new) stock fuel pump. it had a superchip installed before I bought it, and is still installed. I am having trouble with the car surging,/ or jerking while at low speeds(30 or 40mph). also it likes to shift at 4k rpm while at wide open throttle. I have already had the trans adjusted and still having problems.

I asked the summit racing specialists, and they said to put a 190 gph fuel pump, and an adjustable fuel regulator.

I would really appreciate and advice on the situation.
Thanks,-Jordan

mjr46

summit racing specialist.....lol...clueless bafoons more like it, the bb craptastic intake is known for leaks, first I'd check for vaccum leaks

AdderMk2

i'd also take the chip out if it was put in pre-mod

jrw9574

I have searched for vacuum leaks, and that checks out to be o.k. I have not taken the chip out yet. I was wondering if I take the chip out, is there an oem, or dummy plug that takes the superchips place? or do I just take the superchip out?
Thanks for the advice.

TrimDrip

no, they have some kind of grease on them to prevent corrosion on the copper.

jrw9574

I will take the chip out hopefully on sunday, if work allows. I will post with my results early next week.
Again thanks.

sick89

I had a similar problem with my old 91. It had the superchips in it. I just took it out and it ran better. Dont know if it wasnt tuned right or what...

jrw9574

I took out the superchip today. I had to readjust the timing in it.... and It runs a lot better! That horrid jerking is gone. It even seems more responsive. Thanks for the advice every one, i now can drive my car worry free.
Again THANKS!