Running lean I think

[Evo caro]

Need some advice my evo 8 started Having a rough idle when coming to a stop were it wants to die out I suspect it's running lean the mods I have is greddy boost control and uncatted full exhaust and I had a cel p0090 but goes and comes

 

[eclipsyco]

Hi!
I don't mean to be rude but there are evo forums which probably will be able to help you better than a dsm forum Yes we do share lots of parts between the 2 platforms but the evo community is as big as the dsm! Now If this was a DSM with the same issue a would tell you to check the ISC/IAC and check for boost leaks also a highly suggest you to get a wideband!
the p0090 code is for Fuel Pressure solenoid. The solenoid should have a vacuum hose that goes from the intake manifold to the fuel pressure regulator on the fuel rail!

 

[Evo caro]

Ok thanks man and no worries

 

[2gmitsueclipse]

I think your CEL and rough idle are unrelated. The CEL is not "uncommon" in the Evo community and there are a few threads you can review on Evo M. For your rough idle, I would start by pressure testing your intake (blt/boost leak test).

Additionally, I would HIGHLY suggest you pick up a wideband setup to monitor your actual AFR's and a way to datalog such as the Tactrix cable and Evoscan.

 

[Evo caro]

How do you do a boost leak test

I think your CEL and rough idle are unrelated. The CEL is not "uncommon" in the Evo community and there are a few threads you can review on Evo M. For your rough idle, I would start by pressure testing your intake (blt/boost leak test).

Additionally, I would HIGHLY suggest you pick up a wideband setup to monitor your actual AFR's and a way to datalog such as the Tactrix cable and Evoscan.

do you

 

[2gmitsueclipse]

How do you do a boost leak test

do you

Please refer to this thread:

http://www.dsmtuners.com/threads/sudden-loss-of-boost-and-power.499636/#post-153563690