Hello, recently I have been looking at adding some more mid range torque to my GT4 . Im not one to be bouncing off the rev limiter when I drive hard so I feel im not getting the most out of this engine (I would prefer a extra 10tq lower down than a extra 10hp at 7000rpm)
With this in mind I have been doing some research into the mrev2 lower plenum (http://www.motordyne...pID=149ℑ=0) which is basically a moddified pre 05 lower plenum. I have been trying so find out what these modifications are and so far I have found out from a few american owners clubs that 5mm is shaved off the two "snouts" to aid airflow to the front two cylinders.
Has anyone else done this to a stock revup? and will it make any difference without a remap (im not going to remap until I have exhaust ect fitted in a few months time).
I know that the plenum spacers have no effect on the stock revup engine, this has been proven a few times in america but they apparently do make a difference with the pre 05 collector or mrev2 fitted.
Is it worth fitting a spacers while im fitting the lower collector? They are sold together here with 'substantial' power gains http://torqen.uk/ps/...pacer&results=9
This is the spacer on its own http://torqen.uk/ps/350z/engine/plenum-spacers/264-350z-de-motordyne-engineering-516-basic-plenum-spacer-md-ps-b.html?search_query=plenum+spacer&results=9
Here is a dyno print out I found with a stock run, with mrev2 and then with mrev2 and spacer. As you can see the car with the mrev2 does have more power through the range until it drops off at 6000rpm, this is where the mrev2 and spacer come in.
So basically... can anyone on here confirm that there is some benefit to fitting a modified lower collector or mrev2 to my uprev engine without a remap, and if there is, should I fit a spacer to. Thanks!