Limit of Larger SMIC Reached...

[98GSX-WI]

My Hahn SMIC with water injection was able to handle about 22-24psi with a T04b V-trim...but the compressor nut backed-off the T04b and the turbo grinded itself up...

Decided to go with a 57-trim BB T04e...and unfortunately one of the water injection nozzles plugged-up, so I've had to shut it off for the meantime...and the Hahn SMIC seems to only be able to handle about 18 psi before I start seeing knock.

I am now going with a FMIC with the dual water injection system....so I can run the 25psi that I want...

Just thought I would let all of you know the limitations that I'm seeing with the larger SMIC...

 

[Ultimatedsm]

SMIC are good to 400HP without heat soaking (Crank power). FMIC is the way to go, just watchout for your coolent temps , you would want to upgrade your radiator as well.

 

[andymoraitis]

What also works is backing the timing down so you can sustain higher boost levels on pump until you can get the methanol system hooked back up. It's a temporary fix, but it certainly works since boost makes more power than timing anyway.

 

[98GSX-WI]

What also works is backing the timing down so you can sustain higher boost levels on pump until you can get the methanol system hooked back up. It's a temporary fix, but it certainly works since boost makes more power than timing anyway.

Can't reduce timing--I actually put in a chip with more aggressive timing...and am only running a SAFC. I already have the new FMIC and new WI nozzles....just need to install...

I'm also not getting 20 psi until about 5000rpm...but I think it's just that the wastegate is too loose... Car runs pretty strong even with slow spool and only ~18-20psi...but can't wait to see how it runs at 25psi...

 

[RavenX]

Yeah your supposed to see 20psi by 4,000-4,100 rpms because thats what i see.