i just put a new piping kit (and it cant use the stock air box )on my 03 evo and ganed 10 hp but lossed 2600 rpm in spool up i have a 2.3 stroker fully done no cams green 20g and lighted flywheel full race ex. what is going on it seams every time i put a cold air intake this happens anyone know why is it the mass air flow ?????????????
tryed to do a retune but the tuner could not see any thing that need change this its just pipeing not a intercooler and a short ram intake but it happened be for when i put a short ram intake the only thing i can think of its the mas air cant read the flow at the lower rpm do to high sucksion but if i put the stock box on it comes back to full spool at 3000 rpm with the cold air intake its 5600 both at 20 psi nuts ha ps no boost leaks at all we tested it two times
Well I ask what intake he is using because he called it a cold air and the only brand I know that does that for are cars is K&N and well I'm sure most of use have herd the problems with the pipe on that intake that can cause anything from spooling issues to boost issues
Well the problem with the K&N is there is a metal flap in the air pipe that will actually ristrict the air flow.
Yeah I have never herd any problems related with the injen intake system as well.
.....I guess to maybe help find out more where the problem is on your own you could try to do one part at a time to see if it is in fact the intercooler piping or the intake system screwing with your spool if you haven't already...but it does sound kinda odd still that these parts when installed correctly would cause boost issues; though you may want to bring it into a shop who knows are cars and see if they can see anything that maybe causing the issues as it is hard to trouble shoot something such as this over the net.
replaced the injen piping with stock piping and now i hit 20 psi at 4600 4700 rpm left the injen air fillter on with stock intake pipe will replace filter with stock box next and see if it all comes back but just the piping gave me 1000 rpm thats nuts
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