Techy Gurus, your advice is required:

 

What boost are you running?

 

What are your performance mods?

 

How did you work out the max boost to run, did you get it tuned or just guess it based on when it started pinking?

 

The reason I ask is that I am running 16psi as I guessed that would be ok. Before setting up the boost controller properly the boost would creep up to 1.53bar (22psi) and pinking like hell. So I am being very careful. But am I being too careful?

 

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Z first and anything else is secondary!

John Newcomb (NukeEm)

www.geocities.com/jn300zxtt

I reckon 18 psi - 19psi with your spec turbos and injectors is safe in this warm weather. 22 psi is pushing it without having a custom chip to have the correct fuelling.

My mates supra has a similar spec to yours in terms of turbos,injectors etc and he runs 18 psi

I've set the max setting of my boostcontroller on 1.18bar (~17psi) on stock turbos.

Never had any detonation

Problem with running that amount of boost on stock turbos is they get heatsoaked very quickly and the car will loose power.

So i usually have it a bit lower at around 1.08 bar (~15.7 psi)

 

With your setup you should easily be able to run around 1.3bar (18/19psi)

..22psi is a bit much, but I think if you would install larger ic's it should be possible to run that amount of boost as well.

Umm. Sounds like a bit of playing around with settings is in order at Santa Pod tomorrow. I will try setting the high to 1.25, 1.30, 1.35 and 1.4 on a number of runs and see what happens.

 

------------------

Z first and anything else is secondary!

John Newcomb (NukeEm)

www.geocities.com/jn300zxtt

Dont forget, being too careful is a nice trade off again fucking up your engine take your time setting things up right!

Id sooner spend a few hours setting it up, than 30 mins fucking it up

 

or am I teaching grandma to suck eggs here!

not much more help though, sorry

I got some time on Sunday to try some different boost setups and I found the settings that work best on my car without it pinking are:

Low = 0.5bar/7.25psi

High = 1.2bar/17.4psi

Scramble = 1.35bar/19.575psi for 13secs

Warning = 1.40bar/20.3psi

 

Car feels great. Shame I couldn't get the settings to store at Santa Pod though. It kept surging and dropping back down to stock boost so crappy times. Ah well there is always next sunday to look forward to.

 

------------------

Z first and anything else is secondary!

John Newcomb (NukeEm)

www.geocities.com/jn300zxtt