kyle h.
20+ Year Contributor
- 160
- 1
- Apr 2, 2002
-
etown,
Pennsylvania
setup:
-pace setter manifold (slightly modified)
-bullseye power 7cm exhaust housing w/ 38mm wastegate flapper
-tubular 2.5" o2 housing w/ 1 3/4" wastegate external dump tube
-2.5" downpipe to a 2.5" exhaust w/ no cat and straight muffler (Dynomax Ultraflow)
-exhaust leak at the manifold, and probably under the car between downpipe and test pipe
-intake w/ 2g mas
-190lph fuel pump, stock injectors, stock intercooler and lines
-JoeP boost controller set for 15psi?
Ok, here's the explanation:
This exhaust housing is NOT a direct replacement/fit. Due to problems with the snap ring that holds it on, I needed to modify the wastegate flapper, so it stayed shut at idle/no boost. Problem solved, but now I only boost 5psi, Ok, raised it with the boost controller, seems to be set around 15psi now.
the pacesetter manifold has be rewelded, the head flange has been plained, and ported to match the head as best as possible. I also did some other touch up work on it.
I had the pacesetter manifold on before w/ stock exhaust housing and o2 housing, but same exhaust. The car would hit 10psi, then creep to whatever...like 15-20psi
Stock manifold had a crack or two, stock exhaust housing was all cracked on the inside and around the wastegate, didn't really have any creep problems with that setup.
Now, with all the stuff listed above on it:
It hits 10psi and then creeps to 15 and holds there. Do you guys think it could be the design of the manifold? Or just something with my boost controlling? I never really thought a manifold could cause spool up "in stages" like it does.
I have the JoeP routed off the Turbo elbow nipple, right to the wastegate. The turbo elbow nipple its bent/pinched a bit tho, but the controller seems to be functional.
I also saw the turbo spool up to 10 then to 20 with this setup, in first gear. any other gear it is a consistant 10 then 15psi.
advice?
p.s. dont think i'll be fixing the manifold leak, its a huge Pita, and a longer story.
-pace setter manifold (slightly modified)
-bullseye power 7cm exhaust housing w/ 38mm wastegate flapper
-tubular 2.5" o2 housing w/ 1 3/4" wastegate external dump tube
-2.5" downpipe to a 2.5" exhaust w/ no cat and straight muffler (Dynomax Ultraflow)
-exhaust leak at the manifold, and probably under the car between downpipe and test pipe
-intake w/ 2g mas
-190lph fuel pump, stock injectors, stock intercooler and lines
-JoeP boost controller set for 15psi?
Ok, here's the explanation:
This exhaust housing is NOT a direct replacement/fit. Due to problems with the snap ring that holds it on, I needed to modify the wastegate flapper, so it stayed shut at idle/no boost. Problem solved, but now I only boost 5psi, Ok, raised it with the boost controller, seems to be set around 15psi now.
the pacesetter manifold has be rewelded, the head flange has been plained, and ported to match the head as best as possible. I also did some other touch up work on it.
I had the pacesetter manifold on before w/ stock exhaust housing and o2 housing, but same exhaust. The car would hit 10psi, then creep to whatever...like 15-20psi
Stock manifold had a crack or two, stock exhaust housing was all cracked on the inside and around the wastegate, didn't really have any creep problems with that setup.
Now, with all the stuff listed above on it:
It hits 10psi and then creeps to 15 and holds there. Do you guys think it could be the design of the manifold? Or just something with my boost controlling? I never really thought a manifold could cause spool up "in stages" like it does.
I have the JoeP routed off the Turbo elbow nipple, right to the wastegate. The turbo elbow nipple its bent/pinched a bit tho, but the controller seems to be functional.
I also saw the turbo spool up to 10 then to 20 with this setup, in first gear. any other gear it is a consistant 10 then 15psi.
advice?
p.s. dont think i'll be fixing the manifold leak, its a huge Pita, and a longer story.
