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View Full Version : Fixed nitrous tuning issue....wow


Grims
09-14-2006, 09:31 AM
On the dyno I only put down 98 horse power from a 150 shot, and datamaster showed 13 degrees was pulled even though I was pulling 5 with the ignition. A/F was way to lean at around 14-15. So a friend and I took it out for some much needed tuning and got the A/F in the 12s, then opened up the bottle.

I launched from about 25mph at 3k, the RPM the N20 comes on, usually the tires would hold fine. This time I almost lost control of the car! We aborted that run because going sideways and all kind of messed with the datamaster log... So on the next one we went from a 35 mph run, tires spun like mad but in a straight line, 2nd gear spun, usually it would chirp a bit but this blew the tires a way. Then the 3rd gear chirp just put the end to an awesome day of tuning :D

Datamaster is still showing around 5 degrees of timing being pulled as soon as the nitrous hits, then it goes a way, is this normal?

I'm hoping to get the full 150 out of it at the dyno next time I go now.

89gta383
09-14-2006, 04:06 PM
Try pulling some more timing away when the nitrous hits, mine does that also.

Grims
09-14-2006, 04:22 PM
I was trying to do it all from the box so it wouldn't effect NA performance.