I installed a Nisei LICP and a Perrin FMIC and now I am seeing a boost overshoot with the ECU Boost Control. Is it common to have to retune the ECU boost after a LICP & FMIC installation? I have not log my car yet to see exactly what it is doing. I was just curious to see if this has happened to anyone else before.

 

yup I heard like a 2psi difference. less restriction more boost. got to retuen a little.

 

That's what I am seeing about 2 PSI more.

 

better fmic>less pressure drop>more pressure at manifold. results vary with different fmic cores.

 

I got 2 psi more with just the Nisei LICP.

 

I thought bigger intercoolers actually drop pressure due to being larger in size. a lot of intercooler manufacturers will also provide drop measured. When I installed a Turbo XS intercooler I actually lost about 1psi although I know the intake charge is much cooler and made more power due to cooler intake charge.

You are correct when you say results vary I thought I would share my results.

 

N/M , miss read .
Really should stop driving and reading Evom at the same time .

 

All intercoolers have a pressure drop associated with them. Less restrictive intercooler = less pressure drop = higher intake manifold pressure. Generally the bigger an intercooler is the less restrictive it is, but not necessarily.