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Rb25 Turbo Upgrade

Munna

By Munna,
in Engines & Forced Induction

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Munna Rising Star

Munna

Posted
Posted (edited)

I thought this test may give people an idea of the lag of different turbo upgrades.

TEST

From idol in 3rd gear floor it and take note on what rpm it starts to make boost and what rpm its making full boost. Please include engine mods ect.

Eg - my car

R33 GTST manual

Turbo - stock with r32 actuator

Details - 3 inch turbo back exhaust, SAFC, and hybrid FMIC

Boost starts - 1000rpm

Fullboost – 11psi @ ~3000rpm -

Especially interested in HKS 2530,2535, 2540, GTRS and GCG hiflow

cheers

Edited by Munna
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https://www.sau.com.au/forums/topic/90940-rb25-turbo-upgrade/
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Munna Rising Star

Munna

Posted
  • Author
Posted (edited)
This has been done at one stage, about 6 months ago.....

maybe in the GCG hybrid thread.

Do a search for that thread and see how you go.

Yes I remember that thead its what prompted be to start this one id like to see it for a larger range of turbos

http://www.skylinesaustralia.com/forums/in...l=hybrid&st=140

from this Thread^

R33 GTST

turbo - GCG hiflo with vg30 exhaust housing

details - Power FC, Nismo 550 Injectors, GTR34 Front Mount Int, GTR34 Fuel Pump, Sard FPR, Z32 AFM, HKS Step 1 Cams, HKS adjustable exhaust Cam Gear, CES Split Dump, 3" exhaust. Oil Cooler.

boost starts - 2200rpm

full boost - 19psi - 3800rpm 3rd gear

I modified the first post to do the test in 3rd not 2nd because of wheel spin.

Edited by Munna
Bass Junky Grand Master

Bass Junky

Posted
Posted

Dude.

Leave traffic lights, engage second and then 3rd.

Slow down until engine revs are at 1000rpm.

Depress Accelerator.

Have Friend watch boost gauge.

Clinch teeth as car studders and protests.

Accelerate until Redline or until Police car appears behind.

Either slow to accept anal plundering or engage forth gear and then fifth in vain attempt to escape said plundering.

Report back to SAU with boost readings.

BASS OUT

Munna Rising Star

Munna

Posted
  • Author
Posted (edited)
Dude.

Leave traffic lights, engage second and then 3rd.

Slow down until engine revs are at 1000rpm.

Depress Accelerator.

Have Friend watch boost gauge.

Clinch teeth as car studders and protests.

Accelerate until Redline or until Police car appears behind.

Either slow to accept anal plundering or engage forth gear and then fifth in vain attempt to escape said plundering.

Report back to SAU with boost readings.

BASS OUT

Ha ha Nice one bass If your not making full boost to redline thats a pretty laggy turbo.

I live in the county so it makes it a bit easier 100kmph is about 4500 5000rpm in 3rd I think If you havent make full boost by then try 2nd. Your probably a bit laggy for my liking if it hasnt reached full boost by 5000rpm though.

cheers

Edited by Munna
TommO Grand Master

TommO

Posted
Posted

A few points from me firstly. Doesn't the type of road affect boost points? ie a flat road is best? Does time also affect this? ie colder = earlier boost... anyway:

7pm flat road

R33 GTST manual

Turbo - standard

Details - 3 inch turbo back exhaust (CES split dump pipe, 7L high flow cat, turboSX cat back, twin pipe muffler)

Boost starts - 1000rpm

Fullboost – 8psi @ 2400rpm (note: this goes up to 9psi above 3000rpm)

Boost solenoid: not running the standard one, i've got one of those $22 mechanical boost controllers

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