I'm only considering this insanity on the very perifery of my small brain right now but figured I'd ask some advice.

Some of you have been following my build now for a while and know I'm in it to win it. Presently I'm in the process of running the stock block through its paces. Who in the world would have ever thought the stocker would hold this kind of power. But I digress so onto the question at hand.

I'm running 646 horses on a what many would consider a large turbo (Precision 6765). The car is an absolute freaking beast....from 5k to the limiter, and therein lies my problem. While the car pulls like a monster up top I cant get this baby off the line to save my worthless fat ****. Even with the two step at 8k the car bogs as soon as I drop the clutch. So what do you think is NOS an effective tool to spool the turbo for launch or am I just an ignorant twit that has watched to many fast and furious movies?

Any solid feedback would be greatly appreciated.

 

Some guy DRAG will chime in he has shot more NOS then i've breathed air.

 

Your letting out the clutch too fast you have to slip clutch enough to get that baby moving.

 

This. Its all in the technique. You cant just dump the clutch with that big-*** turbo. You do not need NOS. Practice until you are blue in the face.

 

Or until the diff pins take a ****...

 

or the T-case....or the block....or the turbo, practice is expensive lol

 

at least run E85... that will spool up a bit quicker

 

I dont understand why the evo world is so against nitrous. Its used very commonly on almost every other application out there to spool turbos. From a tuning stand point your fine Jestr is top notch. Spraying a stock motor already making big power thats another question and me personally would not run it on a stock ecu. I prefer a standalone that i can control it with.

 

you can use the nos
but that will decrease the lifespan of your engine greatly...
think of the pros and CONS...
what about running twinscroll??? that would reduce spooling RPM

 

thanks for the comments so far guys Not sure if you have ever tried slipping a triple disk clutch but it doesn't work very well

Like I said this is really just on the periphery of my thought process now as I believe installing my 2.3 will solve my problems off the line.

To be honest the cosworth standalone is probably the next step in this build, going to depend on the continued good will from the wife.

If I do actually lose my mind and do this my intent would only involve spraying in 1st @ wot with a cut off for 520prpm. After that its all on the turbo.

 

Double post

 

why do you need a standalone?

 

Most of the supras i do the same. Say cars running race gas. Ill turn the spray off at say 30psi but turbo goes to 40.

You dont NEED one. I just like the fact that most have separate nitrous maps for fuel and timing. The separate maps Adds xx% of fuel and -xx* timing All based on load and rpm axis. (identical to fuel and ign maps) You can have the nitrous turned ON or OFF at xx TPS/ load/ rpm/ and or VSS, etc..

On the flip end i wouldnt put it past you guys to make tables for the stock ecu to control it to

 

oh yeah ok... already done that...

 

I think you just need to work on building more boost on the line. Spraying will work, but you have to make sure you are off of it when that big turbo comes alive because the size of the shot to help you will hit HARD once you see full boost. You won't really feel a 50 shot much coming off the line in my opinion. You are on borrowed time as it is, but the lazy gradual powerbands with those big turbos are a lot easier on these stock motors than hitting them hard with nitrous at low rpm. Even on a stock turbo and slippery auto x tires, I have had problems bogging coming out of the hole while spraying a 75 shot. Sometimes it spins, sometimes it bogs. That is why I started spraying more so that I didn't bog...and it worked. Coming out on a 125 was pretty good.

Don't get a standalone. Spend a few bucks on some Manley turbo tuffs a Wiseco piston and some good valve springs. You will regret not doing that about 2 seconds after you hear rods smacking into your firewall.