talonted_one
20+ Year Contributor
- 846
- 0
- Oct 15, 2002
-
Jacksonville,
North_Carolina
First of all this will probably be a lil lengthy so I appologize in advance.
Im having this weird problem with my car. Between 3kand 4k rpm the car feels like it's falling on its face. There is a hesitation and it also feels like the car wants to move but is being held back.
I suspect the clutch master cylinder or the the clutch its self.
I datalogged a few runs and i see that my initial timing is around 30* when i go to WOT timing falls to as much as 7*.
I'm new to tuning and im lost rigth now. I know that excesive timing retard is a sign of knock, but if i richen things up, I hit fuel cut.
This maybe unrelated but I also noticed that my 14b spools slower in the lower gears i.e. full boost @4k+ rpm. in 1st and 2nd gear even with my exhaust unbolted boost still comes on late.
here is an example of one run in 3rd gear:
rpm timing
4632 31*
4984 8*
5500 10*
6016 13*
EGTs are under 900*c
Boost is at 15 psi.
I need some Ideas. hit me up on the board or on AOL or yahoo sign on's are on my profile
MODS.
all free mods
ported 14b,1G tb,1g intake mani,ported head,5 angle valve job,3" ATR cat back,ACT 2100,ported exh mani,K&N intake,hallman boost controller,Greddy type-S bov,o2 dump,APEXi S-AFC,Blitz duall tt,autometer boost guage,Greddy EGT,custom uip,pocketlogger
please help all criticism is welcomed
Im having this weird problem with my car. Between 3kand 4k rpm the car feels like it's falling on its face. There is a hesitation and it also feels like the car wants to move but is being held back.
I suspect the clutch master cylinder or the the clutch its self.
I datalogged a few runs and i see that my initial timing is around 30* when i go to WOT timing falls to as much as 7*.
I'm new to tuning and im lost rigth now. I know that excesive timing retard is a sign of knock, but if i richen things up, I hit fuel cut.
This maybe unrelated but I also noticed that my 14b spools slower in the lower gears i.e. full boost @4k+ rpm. in 1st and 2nd gear even with my exhaust unbolted boost still comes on late.
here is an example of one run in 3rd gear:
rpm timing
4632 31*
4984 8*
5500 10*
6016 13*
EGTs are under 900*c
Boost is at 15 psi.
I need some Ideas. hit me up on the board or on AOL or yahoo sign on's are on my profile
MODS.
all free mods
ported 14b,1G tb,1g intake mani,ported head,5 angle valve job,3" ATR cat back,ACT 2100,ported exh mani,K&N intake,hallman boost controller,Greddy type-S bov,o2 dump,APEXi S-AFC,Blitz duall tt,autometer boost guage,Greddy EGT,custom uip,pocketlogger
please help all criticism is welcomed