Joined
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35 Posts
Went back to the track today
i have done the folowing to my 87" 9000t
mbc,3" turbo back exhaust, stock turbo of course, the 3" downpipe starts after the first 180 degre bend which is still 2.5"
Turbo XS BYPASS Valve
timing slightly advanced
stock APC box
3 bar fuel pressure regulator modified to work on a pre 88" fuel rail
weight reduction includes no dooor panels, no speakers on the back, ac delete, pretty much gutted out power windows locks , and the dash are still in. car weighted in at 2565lbs
i made 2 passes
first pass as folows
3k launch boged till boost kicked in, 2gear spun till about 5k let off got back in it still spining shifted at 5500 every gear
2.40 60ft
[email protected]
second pass was a little better
got off the line a little better
2.37 60ft
[email protected] spining all the way through 1st and second
car was on a chassis dyno
225 fwhp
290 fwtq
what you guys think?
my fuel curve got really messed up after the fuel pressure regulator, runs too rich after it hits full boost and the power drops at about 4200 right after full boost fuel pressure regulater seems to spike real high and makes the car have a rich dead spot in it for about 500rpm then hp and trq climbes back up slowly.....
i have done the folowing to my 87" 9000t
mbc,3" turbo back exhaust, stock turbo of course, the 3" downpipe starts after the first 180 degre bend which is still 2.5"
Turbo XS BYPASS Valve
timing slightly advanced
stock APC box
3 bar fuel pressure regulator modified to work on a pre 88" fuel rail
weight reduction includes no dooor panels, no speakers on the back, ac delete, pretty much gutted out power windows locks , and the dash are still in. car weighted in at 2565lbs
i made 2 passes
first pass as folows
3k launch boged till boost kicked in, 2gear spun till about 5k let off got back in it still spining shifted at 5500 every gear
2.40 60ft
[email protected]
second pass was a little better
got off the line a little better
2.37 60ft
[email protected] spining all the way through 1st and second
car was on a chassis dyno
225 fwhp
290 fwtq
what you guys think?
my fuel curve got really messed up after the fuel pressure regulator, runs too rich after it hits full boost and the power drops at about 4200 right after full boost fuel pressure regulater seems to spike real high and makes the car have a rich dead spot in it for about 500rpm then hp and trq climbes back up slowly.....