Ls/vtec turbo Neptune tuned loosing boost?????????
05-22-2005, 08:30 PM
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Ls/vtec turbo Neptune tuned loosing boost?????????
whats going on guys i just got my car tuned by jeff this past weekend and if ******* great.just to say jeff is the man and he really knows what he is doing, but here is the problem on pump gas the car was hitting 16 lbs but for some strange reason it will loose boost and drop off to 13 lbs and hold there, the same thing when i was on race gas it was set to 20 lbs and it droped off to 17 lbs,the car made 310 whp and 230 ftlbs at 13 , i could have easily made over 350 if it would have held the 16 lbs, and on race gas it made 360 hp and 260 ftlbs on 17 lbs the car should have made over 390 hp on 20 lbs,i need to know what is causeing it to lose boost im not sure if it is the blow-off vavle or the wastegate
thanxs
setup:
ls/vtec
stock block
b16 head
full crower head valves,springs,retainers
jg manifold
type r cams
skunk 2 cam gears
rev hard manifold
sc61 turbo
3" dp and exaust
1000 injectors
255 fuel pump
38 mm tial wastgeate
greddy type s blow off vavle
clutch masters stage 4
thanxs
setup:
ls/vtec
stock block
b16 head
full crower head valves,springs,retainers
jg manifold
type r cams
skunk 2 cam gears
rev hard manifold
sc61 turbo
3" dp and exaust
1000 injectors
255 fuel pump
38 mm tial wastgeate
greddy type s blow off vavle
clutch masters stage 4
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