hello all,
I'm new to the whole tuning scene and have been battling this problem for a couple weeks now. I have been asking around on the net for some help, but seems a lot of the sites are more about bashing and criticizing me for not knowing instead of helping.. One fellow i did run into that was actually trying to help recommended i ask you guys on this page..
The vehicle is..
302 stock bottom
AFR 165 heads
Holley systemax II intake
FR 30lb Injectors
bbk long tube headers
b cam
bbk 75 mm throttle body
systemax nitrous plate kit (obviously not in use yet)
On microsquirt v3
The weekend before I installed the Microsquirt I was down at the track and she pulled to 6000 RPM all night long so I have ruled out coil, distributor and TFI module. When I first put the Microsquirt in i managed to mess up the ve table and spark table pretty good and did not set the correct dead time and voltage correction for the 30s.
I have since remapped the Ve table and Spark table also set the correct parameters for my injectors... car is running overall pretty dang well all the way up to about 52-5700 RPM then its like i hit a rev limiter it backfires and shudders I just cant seem to figure this one out.. Any help or advise will be greatly appreciated. I am gonna try and attach some data logs and current tune.. thanks
I'm new to the whole tuning scene and have been battling this problem for a couple weeks now. I have been asking around on the net for some help, but seems a lot of the sites are more about bashing and criticizing me for not knowing instead of helping.. One fellow i did run into that was actually trying to help recommended i ask you guys on this page..
The vehicle is..
302 stock bottom
AFR 165 heads
Holley systemax II intake
FR 30lb Injectors
bbk long tube headers
b cam
bbk 75 mm throttle body
systemax nitrous plate kit (obviously not in use yet)
On microsquirt v3
The weekend before I installed the Microsquirt I was down at the track and she pulled to 6000 RPM all night long so I have ruled out coil, distributor and TFI module. When I first put the Microsquirt in i managed to mess up the ve table and spark table pretty good and did not set the correct dead time and voltage correction for the 30s.
I have since remapped the Ve table and Spark table also set the correct parameters for my injectors... car is running overall pretty dang well all the way up to about 52-5700 RPM then its like i hit a rev limiter it backfires and shudders I just cant seem to figure this one out.. Any help or advise will be greatly appreciated. I am gonna try and attach some data logs and current tune.. thanks