Evo2BU

This is the best post I have seen on this site!

Quick

greatness!
I think once they find out the how hot pre- i/c temps are
(even at peak compressor efficiency), they'll realize how important
it is to tune conservatively. The compressor is a torch
also keep timing conservative because heat soak is a killer
the ambient temp and the temp of the charge going in
is never consistent

Ang Wen Yan

Go and have a HKS F-Con V pro for JDM.Aem EMS for USDM.

4G63>OOOO

iTrader: (1)

That's why water injection is such a great idea (cough, cough, hint, hint). No such thing as heat soak with a good WI system since it's not the temp of the water that cools down the IAT, but rather the composition of the molecules within, which never changes. I say tune your car for road courses without water injection active, then turn it on when you're on the track. And it is possible to get intake air temps BELOW ambient.

freedom

iTrader: (1)

An interesting discussion on detonation and pre-ignition theory,

http://www.streetrodstuff.com/Articl...ne/Detonation/

ImportUpgrade

iTrader: (1)

well my philosophy is for a streetable daily driven monster and occassional track car. I aim for decent power with the stock turbo but tune consideratively and use race gas as much as possible. I have crappy 91 octane in CA, so I use 1.5-2 gallons per tank of 100 octane - is this a good mixture? I have upgraded fuel system - injectors, fuel pump. My engine is controlled by the Apex Power FC which monitors and graphs a bunch of characteristics, I also have digital gauges to monitor boost settings,etc. I knock a lot, but it seems to go away after I use race gas mixture. Does anyone know how you can tell if you have knock correction?

Greyman09

iTrader: (6)

Very good thread, just what I have been looking for. Are these suggestions for anyone running track days, stock or modified? Is there an approach for both? Thanks for any help

mifesto

iTrader: (58)

very good tip...

i wont name any specific tuner but some really push the tune to very lean for quick bursts of speed but the margin of safety is small... i personally like to get mine tuned for example to 20 psi, then run 19 psi have that extra safety.... i also plan to go with pure rubbing alchohol in the intercooler spray during track days and ofcourse race gas or atleast 94 octane

4G63>OOOO

iTrader: (1)

So what exactly are the advantages of spraying the intercooler with alcohol other than having a flammable liquid near a hot exhaust manifold?

wangspeed

iTrader: (1)

Uhh, don't put alcohol in the intercooler sprayer unless you want to see flames. You shouldn't even be using the sprayer on track. I wouldn't even use water injection on track. Just get the car tuned by someone that actually roadraces. And I don't mean 5 laps at 7/10ths. I mean get it tuned by one someone that runs or races an Evo or DSM on track.

Warren

Greyman09

iTrader: (6)

Who are reputable tuner for Road track racers? Thanks for any help

metaphysical

iTrader: (3)

My car was tuned by Buschur Racing, if you talk to your tuner they should have some idea of the differences between a daily driver/drag tune and a track tune. He asked me to send me my MAP and almostly instantly told me why it blew. Get someone who is knowledgable and they'll be able to tune for any type of fuel and conditions.

Mr_Green

iTrader: (1)

doesnt vishnu's xede use a leaner than stock map an like 21psi? if all this stuff is true my xede may be comin out.

metaphysical

iTrader: (3)

Keep in mind that the Xede uses the factory ECU which has integrated knock control. Although knock control won't save a horrible tune, I highly doubt your Xede map is unsafe as Shiv does have an understanding of Road Racing.

wilson1

iTrader: (63)

Great Post!

Well done, metaphysical!!