So I am just diagnosing a few things on the car and I am not sure if there is a ****ty tune, mis aligned belt, or both.

Car has 20g turbo, 1000cc precisions, full head rebuild, kelford 272, etc.

My idle is about 875-900, my vac is dropped to 7-9, if I raise the hesitating idle to about 1200 it's at about 14-16. If you take off in 1st the car hesitates at low rpm, bad.. Once, almost feels like it sputtering, new plugs are gappee to .020. Also sometimes when boosting the cel flashes, so I am not sure if it could be a misfire, or knocking. I also free rev'ed it today to see if any issues a occurred and it was a little rough and the CEL came on again. This weekend I am going to check timing, and also have the tune looked at in the next few weeks. I bought the car from another person and just trying to diagnosis a few issues.


Thank you.

 

What plugs? Who tuned it?

 

Dose the shuttering only happen when cold.?

 

BR7ES - the last plugs in the car BR8ES - problem still exists with both plugs, figured it was not a bad idea to always put new plugs in the car.

At cold yes it takes like a minute to warm up - but honestly it happens all the time. Especially when taking off lfrom a stop, car sputters a lot, CEL comes on a few times, car pulls very well top end, but I am no longer really going beyond 5 psi for daily driving.

 

Does your wideband peg rich when this happens? If so, youre prolly going into open loop.

 

The innovate gauge doesn't work, I have a brand new AEM UGEO, that wi I'll be installing in 3 days. I will check then

 

hi is it possible for you to post a video would like to see if yours is doing the same as mine

 

Yeah I can do that when I get back today

 

Any update on what your issue was? Thanks.