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Rb25neo Turbo Setup - Opinions/recommendations

Kmac92

By Kmac92,
in Engines & Forced Induction

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Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

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When i had TS0.82 on a 6boost, felt same as an open 0.82 on stock mani, but i lost 500rpms response for some reason, was same tune and everything else identical.. single gate on the housing but further around the snail so maybe that caused it? E85

Stock mani, gate off housing was best setup...

longer runners will induce some lag but not as much as 500 rpm.

another way around it is to come on boost a little leaner with less timing. This will increase EGTs and get the turbo to boogie quicker

I'm tempted to FSU and go a GTX, twin scroll with twin gates if I ever get bored.

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AngryRB Grand Master

AngryRB

Posted
Posted

longer runners will induce some lag but not as much as 500 rpm.

another way around it is to come on boost a little leaner with less timing. This will increase EGTs and get the turbo to boogie quicker

I'm tempted to FSU and go a GTX, twin scroll with twin gates if I ever get bored.

Yeah, i was expecting full boost of 20psi at 3500rpm, the GTX on stock mani did 20psi at 3800rpm with exact same tune etc...

This short clip you can see nothing happens till almost 5000rpm so it was not like a 0.63open at all..

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

^ that is laggy, however is your rpm gauge reading correctly?

I know mine has about a 200rpm difference to what is being shown by the ECU up the top end.

Never know, your cluster could be off its tits

owenliberts Enthusiast

owenliberts

Posted
Posted

post-93368-14380721219504_thumb.jpg

Here is mine, .82(I think, maybe .78) twinscroll on 6boost manifold.

From memory Trent was saying the rear housing was holding it back from making more top end. The graphs are 98 and e85.

I'd be interested in seeing what a 1.01/1.06 rear would do, I've been thinking of doing the swap

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Kmac92 Enthusiast

Kmac92

Posted
  • Author
Posted

Yeah, i was expecting full boost of 20psi at 3500rpm, the GTX on stock mani did 20psi at 3800rpm with exact same tune etc...

This short clip you can see nothing happens till almost 5000rpm so it was not like a 0.63open at all..

https://youtu.be/2ZjV5Pb5ySc

Lag for days !

Kmac92 Enthusiast

Kmac92

Posted
  • Author
Posted (edited)

attachicon.gifImageUploadedBySAU Community1438072122.747273.jpg

Here is mine, .82(I think, maybe .78) twinscroll on 6boost manifold.

From memory Trent was saying the rear housing was holding it back from making more top end. The graphs are 98 and e85.

I'd be interested in seeing what a 1.01/1.06 rear would do, I've been thinking of doing the swap

Not a bad result! The e85 makes such a big difference.. yeh i honestly havent seen any set ups twin scroll, gtx3076 with 1.06a/r am interested to see how itd go...

U got 289 kw on 98...i woulda expected a little more ? At least 300? Judging by others results...what boost was that at?

Edited by Kmac92

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