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Gcg Hiflow Turbos Or R33 N1's For 32 Gtr

wildr33gtst

By wildr33gtst,
in General Automotive Discussion

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wildr33gtst Rising Star

wildr33gtst

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I just picked up my car since i had the turbos changed, i was told the turbos were standard but when my mechanic pulled them out they were GCG Hiflows so i rang GCG and gave them the SN and P/N They told me they are standard r32 gtr turbos with a new cartridge put in and steel wheeled.

My car was running 14 to 15psi on the GCG hi flows now that the N1's are in i am only running 9psi or so, I havent put a boost controller in yet. Does anyone know why they are running different boost?

I didnt think you would upgrade turbos and go backwards thats what it feels like it used to pull like a train motor has been rebuilt and strengthened and the head has had a clean up. I know the N1s are are slightly bigger turbos and are meant to be rated higher than my GCG Hiflows, I am just hoping if i wind up the boost on the N1's i will get that same feeling back i previously had. At the moment i am running Standard Ecu that has been remapped. I have Cam Gears and new fuel pump, looking at buying a Power fc Shortly just want to get the Car dynoed in the next couple of days with the remap to make sure everythings safe. But i am so tempted to put my profec B in from my GTST and Wind up the boost. I know the standard ecu in my GTST was absolute crap are the GTR ecu's just as shit or there not quiet as bad?

Duncan Grand Master

Duncan

Posted
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nothing wrong with hi flow standard turbos for good response.

re the boost, when you run bigger turbos the same amount of air = less boost, because you have the same air but more volume to move it through. 14 on high flows dropping to 9 on n1s sounds more like a boost leak of some sort to me though

wildr33gtst Rising Star

wildr33gtst

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It holds boost perfectly the gcg hi flows kicked in pretty similar to when the stock turbos do, Also the gcg had an adjustable actuator so maybe that was set to higher boost.

No pretty sure i dont have a leak going to put a boost controller in tonight and wind it up a bit.

Then i have to go past racingline and get in dynoed to check that the mixtures are okay with theis jap remap i have got.

Thats why im hesitant to wind up the boost and since it's a new motor and the ammount of money thats been put on it i would hate for it to blow up because it wasnt safe.

Why what boost do N1 turbos run stock? cheers

Duncan Grand Master

Duncan

Posted
Posted

we run stock piping and boost in the race car - changing from standard turbos (with no boost restrictor) at 14psi dropped to 11psi with r32 n1 turbos.

no idea what standard boost is with n1 turbos that is a real can of worms

GTRsean Grand Master

GTRsean

Posted
Posted

Been through a few setups now.

I had the most fun with 300RWKW R33N1's@ 1.3 BAR.

Have 2530's at the moment, 17PSI by 4800 too high for my liking even though top end is great.

Thinking of going to HKS GTSS next year.(Yes have read about 2860-5 and -7).

wildr33gtst Rising Star

wildr33gtst

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Been through a few setups now.

I had the most fun with 300RWKW R33N1's@ 1.3 BAR.

Have 2530's at the moment, 17PSI by 4800 too high for my liking even though top end is great.

Thinking of going to HKS GTSS next year.(Yes have read about 2860-5 and -7).

Yeah ther only reason i went r33 GTR N1's is because i got them real cheap with no shaft play and no chips on the blades or anything i wanted the garrett 2860-5's but couldn't really afford it at the time and i just wanted the car back on the road. I'm getting it dynoed later today my blitz sbc arrived so if i have time before this afternoon i will fit it before i put it on the dyno.

Just need to get a power fc im looking for one at the moment to finish it off untill i get bored of these turbos and upgrade but im glad to hear you liked the setup when you had it and 300rwkw is what i'm really aiming at for now. I know the motor is built for alot more but i guess it will be pretty reliable for a while, I'm just hoping the remap isn't to bad and i get a decent number without the fc but we will see what happens.

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