I just took ownership of my first GN and have some questions...
I have some concerns after much reading here that I may have too much Boost..... The mods that I was told that are on the car and I believe the information to be correct is as follows.
Waldro pump and wiring harness
adjustable regulator
adjustable waste gate rod
K&N filter and aluminum Kirban I think maf pipe and GM Maf
Stock injectors
Has distribution plate from Kirban I think between the upper and lower pleneum.
Jay Carter street chip.
Anyway .. THe car runs great on the road got 25 mpg and on mild throttle application about 12 psi it shoves you back decent for that type of throttle position... However like passing from 55mph floor it and it downshifts and revs the turbo is whistling, but it just does not feel like its pulling that hard.... I don't hear pinging but the car has no mufflers so it's kinda loud....
Boost is hitting 19 psi running 93 octane fuel...
Also is it normal that you can nail it from a dead stop and it will not spin a tire unless you hold it on the brakes and build 4-5 psi of boost? I may be spoiled by my 2nd Gen Trans am with aluminum head 455 cid engine and 5 speed that will destroy the tires from a 40 mph roll instantly though too.... I just feel the GN should be running harder... I am thinking I need to extend the rod on the wastegate 3 or 4 rounds and get the max boost down to about 14-15 psi.... maybe it is retarding timing.... Normal driving is fine. I would like to get the GN to run mid 12's one day ... I think 13's might be possible from my SOP impresion right now .....
Also at wot does the computer disengage the AC compressor and cut the charging circuit on the alternator to reduce load ?
Thanks
I have some concerns after much reading here that I may have too much Boost..... The mods that I was told that are on the car and I believe the information to be correct is as follows.
Waldro pump and wiring harness
adjustable regulator
adjustable waste gate rod
K&N filter and aluminum Kirban I think maf pipe and GM Maf
Stock injectors
Has distribution plate from Kirban I think between the upper and lower pleneum.
Jay Carter street chip.
Anyway .. THe car runs great on the road got 25 mpg and on mild throttle application about 12 psi it shoves you back decent for that type of throttle position... However like passing from 55mph floor it and it downshifts and revs the turbo is whistling, but it just does not feel like its pulling that hard.... I don't hear pinging but the car has no mufflers so it's kinda loud....
Boost is hitting 19 psi running 93 octane fuel...
Also is it normal that you can nail it from a dead stop and it will not spin a tire unless you hold it on the brakes and build 4-5 psi of boost? I may be spoiled by my 2nd Gen Trans am with aluminum head 455 cid engine and 5 speed that will destroy the tires from a 40 mph roll instantly though too.... I just feel the GN should be running harder... I am thinking I need to extend the rod on the wastegate 3 or 4 rounds and get the max boost down to about 14-15 psi.... maybe it is retarding timing.... Normal driving is fine. I would like to get the GN to run mid 12's one day ... I think 13's might be possible from my SOP impresion right now .....
Also at wot does the computer disengage the AC compressor and cut the charging circuit on the alternator to reduce load ?
Thanks