370z GTM Stage 2 twin turbo Stock block

LafitteZ

Unorthodox is a very very good mod with turbo and light flywheel and clutch. Turbos come on much earlier and while cruising the engine works wayyyyyyy less even at speeds of 80mph.

Nixlimited

This is highly unlikely. First of all, pulleys will not affect the turbos at all since the turbos are dictated by exhaust flow and pulleys aren't going to change that.

Second, underdrive pulleys usually underdrive by <= 10%, which means at best you are saving 10% of what the accessory parasitic loss is, which is small compared to the total output of the engine while cruising.

I'm not saying that you can't make more power from pulleys (warnings from reputable tuners notwithstanding), but they are certainly going to be very nominal overall.

__________________
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New ride: 2015 GT-R - 647 WHP / 641 WTQ (e85) & 543 WHP / 519 WTQ (91)

LafitteZ

Lets not forget rotational weight with the 10% underdrive. Anything that allows the car to rev quicker will spool turbos faster but notice I said unorthodox pulley and light clutch and flywheel. Yes the pulley will be minimal in hp but the feel of the engine and the speed of the revs are noticeably quicker with just the pulley.

Nixlimited

Again, for the sake of everyone else reading this thread, let's be clear. What most people who have had turbo cars are referring to when they say "spool faster" is reducing the point in the rev band where the turbos hit some boost level. For example, if I say that my new exhaust made my turbo spool faster, typically I mean that whereas I used to hit X psi at 4000 RPMs, now I hit X psi at 3800 RPMs. Thus, the turbo spools faster with reference to the RPM band.

What you are saying is different and misleading. Certainly if you can accelerate through the RPM band (under load) faster, you will be able to spool your turbos faster as measured from some point in time because the car is more powerful and able to get to that RPM point faster. However, you will not be able to spool the turbos any faster with reference to your RPMs because the pulleys do not affect exhaust flow in any way at all. Using our example above, you would still hit X psi at 4000 RPMs with or without the pulleys, however, it may take you 1/2 second less to hit 4000 RPMs because of the increase in power. Turbos run off of exhaust flow, plain and simple, and anyone who thinks a pulley is going to make their turbo spool faster is kidding themselves.

__________________
Car Sold! Pleasure being a part of the Z community.
New ride: 2015 GT-R - 647 WHP / 641 WTQ (e85) & 543 WHP / 519 WTQ (91)

LafitteZ

Sry for misleading you guys!
I stand corrected! With those mods the time between hitting the throttle and your car start to go a hell of a lot faster will be less. Will that help you sleep tonite? lolololol. In other words the turbos if they spool at 2000 rpms will still spool at 2000 rpms but 2000 rpms but you will get from 0 to 2000 rpms much faster with those mods. Thanks einstein^