The Best Stock Turbo Manifold?
EvoM Guru
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From: Tri-Cities, WA // Portland, OR
Pipes and tubings are measured differently. A 1.25" tubing measures 1.25" O.D. (Outer Diameter). However, a 1.25" piping measures 1.66" O.D.
MrC
did three baseline pulls with the MAP ported stocker, swapped to the FiD manifold right on the dyno and 30 minutes later did three more pulls without touching boost or the tune. Picked up 20hp over the ported stocker but more importantly picked up power everywhere with really minimal increase in spool.
Here is a link to my testing.
https://www.evolutionm.net/forums/ev...-manifold.html
I'm running a 1-1/2" (pipe) tubular manifold with ~17" runner lengths. Most of the others out there seem to be 11"-14" runners and most are using 1-1/4" pipe. My car holds HP pretty well out to 7500 even on the stock IX turbo. It is more "laggy" then a ported stocker, although, I wouldn't really call it laggy.
It seems more like it takes away a bit of the "hit" when boost comes on but I don't really find myself waiting for the turbo to spool ever. It makes power delivery more linear, which is something I would rather have then that hard hit of torque that tends to upset the chassis under corner exit.
I think if I build another manifold though, I'll be using stepped primaries in the 18"-20" length range.
It seems more like it takes away a bit of the "hit" when boost comes on but I don't really find myself waiting for the turbo to spool ever. It makes power delivery more linear, which is something I would rather have then that hard hit of torque that tends to upset the chassis under corner exit.
I think if I build another manifold though, I'll be using stepped primaries in the 18"-20" length range.
I never found myself waiting for the turbo to spool while driving. But watching an in-car video of my car at an auto-x I am definitely leaving a lot on the table with the response I'm getting on the larger runners.
A new manifold with smaller runners is definitely on the to-do list for this winter. Possibly some TME9+ turbo upgrade action too.
Thread Starter
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From: Raleigh, NC
I had some doubts, then I had the opportunity to try out the FiD Tubular manifold at my buddies Race Shop, DB Performance.
did three baseline pulls with the MAP ported stocker, swapped to the FiD manifold right on the dyno and 30 minutes later did three more pulls without touching boost or the tune. Picked up 20hp over the ported stocker but more importantly picked up power everywhere with really minimal increase in spool.
Here is a link to my testing.
https://www.evolutionm.net/forums/ev...-manifold.html
did three baseline pulls with the MAP ported stocker, swapped to the FiD manifold right on the dyno and 30 minutes later did three more pulls without touching boost or the tune. Picked up 20hp over the ported stocker but more importantly picked up power everywhere with really minimal increase in spool.
Here is a link to my testing.
https://www.evolutionm.net/forums/ev...-manifold.html
This guy is a liar.
I never found myself waiting for the turbo to spool while driving. But watching an in-car video of my car at an auto-x I am definitely leaving a lot on the table with the response I'm getting on the larger runners.
A new manifold with smaller runners is definitely on the to-do list for this winter. Possibly some TME9+ turbo upgrade action too.
I never found myself waiting for the turbo to spool while driving. But watching an in-car video of my car at an auto-x I am definitely leaving a lot on the table with the response I'm getting on the larger runners.
A new manifold with smaller runners is definitely on the to-do list for this winter. Possibly some TME9+ turbo upgrade action too.
What exhaust manifold are you running if you dont mind me asking?
