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Standard R33 computer running 15PSI

Guilt-Toy
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Guilt-Toy Grand Master

Guilt-Toy

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Posted

Can this be done with the use of a fuel cut defender?

They say that these things run really rich on boost so would the extra boost still run OK ? or will it run lean on anything over the boost cut and ping ??

I dont have the money for a upgraded computer right now and I want to squeeze a bit more performance outta it.. The intercooler is upgraded (supra round core) and so is the turbo (steel rear wheel T3 highflowed with t4 front wheel)

Would it be worth installing the turbo smart fuel cut def? or just waiting for a S-AFC or something?

is anyone using a standard computer on more then 13 PSI boost ?

It is a series 2 engine

Anyone have any idea how much you can get outta a standard computer?!?

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R31Nismoid Grand Master

R31Nismoid

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with that turbo setup your stock ECU isn't gonna do you any justice as they map's don't really suit turbo upgrades.

as when boost hits it will be different and stuff. I should put a stock ECU into mine and see what it does ... (i got bigger turb's too but i got chipped ECU with a smooth as curve)

S-AFC might fix it but i'm not sure?

Guilt-Toy Grand Master

Guilt-Toy

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Posted
Originally posted by RON-15H

I have a 95skyline stock comp and stock ecu running 14psi with a electronic dual stage boost controller without any probs. i have a front mount and exhuast and air filter

What kind of front mount ???

Anyone else??

Guilt-Toy Grand Master

Guilt-Toy

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  • Author
Posted
Originally posted by YBSLO4

Dude you'll probably find that the factory boost control cut wont allow you to go that high, and with a stock cooler and turbo pushing that kinda psi is asking for it to giveway. The turbo seal on teh exhaust housing on a stock R33 is only rated to 14psi out of the factory, in other words once ya go passed that limit it is passed what its made to withstand for a certain period of time. Ya better off saving ya bucks and keep it on say 10psi max for no with no cooler or turbo and get ya self the stuff ya need to make it safe to run that kinda boost. Go zorst and filter to free up the airflow which itself will give you a slight increase in boost naturally, then turn up to say 10psi with a bleed valve, and then hold out for a cooler and computer/piggy back once thats done to correct the richness and allow you to get the most out of it.

You obviously did not read my post.

The turbo is a steel rear wheel VL turbo with a T4 front wheel.

It has a upgraded intercooler (Supra round core) & CAI setup with K&N

Ive got a boost cut fuel cut defender Turbo smart that I want to install. I just want to know if the standard computers mixtures would still be OK at 15 PSI!!!!

So no one has done mods to their car and kept the standard computer ?!?

predator Grand Master

predator

Posted
Posted
So no one has done mods to their car and kept the standard computer ?!?

not many do, for these sorts of reasons

basically no.. its not going to run 15psi without u installing at least some type of electronic management - thats like double the maximum boost the stock ECU is expecting, never mind the different turbo and its different characteristics.

turbomad Community Regular

turbomad

Posted
Posted

Your cheapest way out is the SAFC $550 fit it yourself and the tune is $50-100, as far as the fuel cut defender goes I havn't got one (at 12psi though) can't say what would happen at 15psi. Best thing to do is put it on a dyno and check what your A/F ratio is now.

hungry6 Experienced

hungry6

Posted
Posted

i was running 18psi on an aftermarket turbo with an apexi speed cut also i had a variable(homemade)afm signal adjuster which also double as cold start injectors emulator. don't think u can buy one of these, but it was good for 18psi on a gt28 with external wastegate, so yes it can be done, but u need lots of patience.

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