Postby adamros10 » December 15th, 2011, 4:53 pm
don't bother with the front mount. you already have an intercooler and it is a lot of stress and probably no gain since the extra lag and boost drop will negate the positives of colder air. i have a 3.0 frontier. came with no intercooler. i did the front mount which gave positives and negatives. boost lag increases and max boost dropped from 15psi at 3000rpm to 13psi at 3000rpm. i used a boost controller to bring back up the boost to 15psi but it reached at a later 3500rpm. top end improved a bit where it was mostly noticeable at night. running the pipes is ridiculous, i have a 2" body lift which made it easier since i squeezed a pipe through the bottom of the body and chassis, you do not have that luxury. if you really want more, do exhaust, i did a 3" ss mandrel bent downpipe straight off of the turbo into a 3" pipe all the way to the back. difference = amazing, did alot more for power than intercooler, boost insanely fast and got rid of my flat spot. van pulls smooth and strong through the whole rpm range now. do not even bother with extractors because they have a very short run and would be a very high cost to make for extremely minimal gain. major restriction area of exhaust is downpipe. so dont bother do exhaust if you are not gonna do it from the turbo-back because you will see no difference.
all info from experience with my vehicle
hope this helps you make a decision
The size of piping choosen has alot to do with boost response ...the original plan was to go with the intercooler and turbocharger upgrade, boost controller and a exhaust system...depending on the fuel demands a chip would have been added..unfortunately i may not be able to continue as the van is now for sale need to get the wife mobile ..if i still have it after january 2012 i will continue as i already have most of the parts.
