Hello, I hope some of the pro's here can help me out.......I searched for various key words but no luck.
I finished my install a couple of days ago.....Drag III kit on my 95GSR, 310cc's, 8:1 Vortech, Aitex inline pump. Everything works great. Car runs fine, boosting real smooth up to 5 psi. Gonna dyno it next week and get my shop here to tune it in with my VAFC and adj. cam gears, so i am sort of taking it easy until then.
There are two things happening that I cannot figure out. When I am on the highway cruising in 5th gear, the car will sometimes stutter for not even half a second......... I can barely hear it through the exhaust and sort of feel a pause through the gas pedal. When I am boosting or just accelerating, it does not do it, nor does it do it at idle. My A/F gauge never goes lean. During the install I replaced the plugs (BKR7E-11's gapped at .30), new Moroso wires, new cap and rotor, fuel filter and new 8:1 recalibration kit for Vortech.
The other thing only happened two times but it was concerning. During an acceleration on the highway, starting from about 65mph and shifting down to 4th gear, it just hesitated and did not want to accelerate anymore.........sort of stopped. So I eased off and continued cruising, I tried it again and it was fine, accelerating and boosting like normal. Any help would be great, thanks!!

 

Anybody with any ideas?????

 

just wait till u play with your afc and see if it still do it

 

Re-check everything that gives your motor spark. Like a loose plug wire. A momentary loss of spark will make your car hesitate like that.

Tom

 

Cool, thanks guys.........I actually leaned out my fuel using my A/F gauge and my VAFC at narrow throttle, low cam and the hiccups stopped.........gonna get dyno tuned this week at a shop here.....they have an air/fuel hookup also so hopefully I will be able see my fuel curve and tune it just right.