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Excessive Lag?

chester_fb

By chester_fb,
in Engines & Forced Induction

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chester_fb Enthusiast

chester_fb

Posted
Posted

hey guys

i've got a garrett T3/T4 A/R .60 turbo on my rb25

and im just wondering if its laggier than what its meant to be.

STARTS coming on boost at 4500 rpm, to me this seems much laggier than it should be

everything else is more or less stock, apart from 3" exhaust, pod, boost controller etc.

thanks guys

Chester

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l0WRB Mentor

l0WRB

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.6 exhaust housing or front cover? why would u put an after market turbo on with a stock ecu, unless ofcourse you want to rebuild your motor in a few months time once u blow it up.

get an after market computer and get it tuned, might help it, but all depends on the size of the exh housing aswell...

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chester_fb Enthusiast

chester_fb

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.6 exhaust housing or front cover? why would u put an after market turbo on with a stock ecu, unless ofcourse you want to rebuild your motor in a few months time once u blow it up.

get an after market computer and get it tuned, might help it, but all depends on the size of the exh housing aswell...

.60 front cover, not sure of rear housing

i put it on because it was the turbo that came on the rb25 that i bought.

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PM-R33 Grand Master

PM-R33

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Posted (edited)

Honestly get yourself a stock turbo and put it back on. Power difference probably wont be that much different consdering everything else is stock and holding it back. You'll get good response and better midrange, 4500rpm is crap. Then save up for a proper decent turbo.

That's what i would do anyway.

Edited by PM-R33
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Kaido_RR Grand Master

Kaido_RR

Posted
Posted (edited)
hey guys

i've got a garrett T3/T4 A/R .60 turbo on my rb25

and im just wondering if its laggier than what its meant to be.

STARTS coming on boost at 4500 rpm, to me this seems much laggier than it should be

everything else is more or less stock, apart from 3" exhaust, pod, boost controller etc.

thanks guys

Chester

you will need an aftermarket ecu or even just an safc to start unlocking the power and helping to reduce the lag. Then you will find out you might also need a fuel pump, injectors and afm as your stock ones are maxing out

However im guessing the T3/T4 turbo is oldskool and is only plain bearing? (possible only oil cooled) therefore it will be laggy they some somethign newer which is ball bearing

Edited by Kaido_RR
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