Strange Boost Issue

[elo240]

First off I'm new to boosted cars so my trouble shooting skills are a litlle weak. I have a stock sr20 in my s13, side mount ic, stock boost controller running 12 psi. The other day as the motor reach full boost it started to lightly stuter almost like it hit a rev limiter. seems to run fine rest of the time. runs good at lower boost. I have no clue what to look for. Please help.

Update: Found water in one of the spark plug tubes under the coil pack. Must have been from my recent wash.

Modified by elo240 at 8:30 AM 3/6/2008
Modified by elo240 at 8:32 AM 3/6/2008

[grenade180sx]

turn the boost down champ.

stock isnt 12psi.

its 7psi. and most engines aren't the same. ie your friend can run 12psi on his sr wit the same mods, but when you try it your car bucks and hiccups.

turn the boost down. as well as check for any boost leaks by putting soapy water onto the couplers. old couplers like to leak..

[elo240]

Yea it is If you use the factory boost controller. Its controlled by the ecm. this swap was done by a very good shop and has been running great till yesterday.

[elo240]

anyone got any ideas? I'm going to pull the plugs and check them out.

[elo240]

Bump for fix