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Does New Turbos = Re-Tune?

91BNR32

By 91BNR32,
in Engines & Forced Induction

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91BNR32 Enthusiast

91BNR32

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Posted (edited)

Hi guys To cut the story short, I got told the R32 GTR I bought had Nismo turbo's, so had some work done thinking they were steel wheel turbo's.

Had a bit of work done at the shop.. Power FC, boost controller, cam gears, injectors, pump, 302 awkw @ 19psi. 2 weeks later.. Big Bang under boost... white smoke etc... and I found out they ended up being the stock r32 gtr ceramic ones. :\ Not happy as you can imagine...

Just had some brand new 2860 -5's Garrett's fitted up over the last week $, and was wondering does it need to be completely re-mapped again? or just a quick re-map on the dyno. Or Is it safe to even drive or give it some stick? Appreciate your advice. Cheers

Edited by 91BNR32
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Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

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Of course, as the amount of air ingested will change drastically across the rev range not to mention there would be less exhaust restriction to dial in more timing.

In saying that, safe to drive provided you don't hit +ve manifold pressure.

91BNR32 Enthusiast

91BNR32

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.7 bar is the lowest out of the 4 boost settings on the controller that the tuners set up. Sounds like I'll just put it on that and baby it back to them.

Still have standard AFMs so prob make still around the 300ish. But if I get some z32/nismos I've read up these -5s can do 340+ awkw? 19-20psi would be the most I'd run 

 

N1GTR Grand Master

N1GTR

Posted
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^^^On a built engine, with all the rest of the car up to scratch yes, if they're bolted onto an otherwise pretty stock GTR (so excluding exhaust, ecu, pod filters) they'll give a crap result compared to the guys with all the right parts and the same turbos :)

DVS JEZ Grand Master

DVS JEZ

Posted
Posted

^^^On a built engine, with all the rest of the car up to scratch yes, if they're bolted onto an otherwise pretty stock GTR (so excluding exhaust, ecu, pod filters) they'll give a crap result compared to the guys with all the right parts and the same turbos :)

Agreed. For some reason everyone latelythinks -5's will give them 380 + kw on a stockish 2.6L. Have a look through the dyno results thread, there are very few that have done this. Most are around 350 and under, and thats with cams etc

On topic though yes you will need a tune

91BNR32 Enthusiast

91BNR32

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yea I thought about the -9's for that little more response, but selling the car soon, and the workshop already had these on the shelf. Im sure I will still be happy with the -5's as it will be a improvement over the stock ceramics. Still can't believe I ran 20psi through them.. was lucky they only let go and not back through the motor..

Motor was fully rebuilt 3000km ago. Built to N1 spec, N1 pistons, oil pump, etc etc. so by all means no fully forged motor.. Still okay for 20psi though.

DVS JEZ Grand Master

DVS JEZ

Posted
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As much as i dont want to say this u cant be certain no ceramic dust has gone back through the motor but u may be lucky.

Xcalaba has run big boost on stock ceramic turbo's for a long time. No one is sure how- i think he is using witch magic :P

91BNR32 Enthusiast

91BNR32

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Posted (edited)
As much as i dont want to say this u cant be certain no ceramic dust has gone back through the motor but u may be lucky. Xcalaba has run big boost on stock ceramic turbo's for a long time. No one is sure how- i think he is using witch magic :P

I hope im lucky.. thats the last thing I need... :( The car still idled and drove completely fine when not putting it under boost after it let go.

Car Has no Cat on it, and I was giving it boot when it went bang. So im hoping it just blew out the back. (the rear turbo exhaust wheel went.) For piece of mind I will do a compression test to just be sure.

Edited by 91BNR32

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