Rotrex SC K20a2 problem
06-17-2009, 12:05 PM
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Rotrex SC K20a2 problem
Hi,
I am building a K20a2 (Euro Ep3 Type R) with a Rotrex Supercharger.
The SC setup was on a car, I removed it about 6 months ago and have just installed it onto a new car. On the old car it had a top mount intercooler. I have now fitted a FMIC.
The Setup is in this order: Air filter - Throttle Body - Super Charger - Intercooler - Inlet Manifold
The problem
When I start the car its idle fluctuates between 2000RPM and 1000RPM. If I remove the vacuum pipe from the map sensor then it will idle stably at 1000RPM but a little rough. (the map sensor is a 2.5Bar sensor)
I have tried altering the throttle response on the Hondata from one extreme to the other but it did not cure the problem.
I have checked all over for a vacuum leak but cant find one and guess because i can make the idle stable by removing the map sensor this isnt the problem.
Anyway hope someone can come up with an idea.
Thanks a lot
I am building a K20a2 (Euro Ep3 Type R) with a Rotrex Supercharger.
The SC setup was on a car, I removed it about 6 months ago and have just installed it onto a new car. On the old car it had a top mount intercooler. I have now fitted a FMIC.
The Setup is in this order: Air filter - Throttle Body - Super Charger - Intercooler - Inlet Manifold
The problem
When I start the car its idle fluctuates between 2000RPM and 1000RPM. If I remove the vacuum pipe from the map sensor then it will idle stably at 1000RPM but a little rough. (the map sensor is a 2.5Bar sensor)
I have tried altering the throttle response on the Hondata from one extreme to the other but it did not cure the problem.
I have checked all over for a vacuum leak but cant find one and guess because i can make the idle stable by removing the map sensor this isnt the problem.
Anyway hope someone can come up with an idea.
Thanks a lot
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