Not Enough Power

[Links]

Putting 98 RON fuel should allow you to wind the boost up a bit higher before it starts to ping at all (much)..

why were you tuning the car on a mixture of 95/98?

[GTSR22]

Putting 98 RON fuel should allow you to wind the boost up a bit higher before it starts to ping at all (much)..

why were you tuning the car on a mixture of 95/98?

<{POST_SNAPBACK}>

it was tuned at bens and on his dyno got to 232rwkw, but on another it only got 212rwkw, the problem has been fixed now it seems that the stock boost is actually 12 psi so turning it up a bit should see the power go up,

thanks for your help guys and snowy

cheers

[West]

Maybe Molderator should move this to force induction forum, you'll get more info overthere.

[Beer Baron]

R34 N1s are not the same as standards but just with steel wheels. They are very different on the exhaust side with .64 A/R rear housing compared to .48 A/R for the stockies. they also have different size and trim wheels, and a ball bearing centre and a built in seperater in the exhaust housing to seperate the wategate flow. There is no reason with 18-20psi and the right tune that you can't make 330rwkw+ with those turbos. The 34 N1s are very similar to a GT-SS. Some '34 N1s' i've seen also have a .60 A/R comp cover which makes them pretty close to a 2530. They are a pretty good turbo for a street GTR.

the question is: are you sure they are 34 N1s?

[GTSR22]

R34 N1s are not the same as standards but just with steel wheels. They are very different on the exhaust side with .64 A/R rear housing compared to .48 A/R for the stockies. they also have different size and trim wheels, and a ball bearing centre and a built in seperater in the exhaust housing to seperate the wategate flow. There is no reason with 18-20psi and the right tune that you can't make 330rwkw+ with those turbos. The 34 N1s are very similar to a GT-SS. Some '34 N1s' i've seen also have a .60 A/R comp cover which makes them pretty close to a 2530. They are a pretty good turbo for a street GTR.

the question is: are you sure they are 34 N1s?

<{POST_SNAPBACK}>

yes we are sure, we have looked at them from undeneath and that is what was specified that was on the car. you can here them wind down they are definatley roller bearing.

[Al]

I would have thought that with R34 N1 turbos you would have no chance of reaching 300rwkw, unless you were running some rediculas boost, say 28psi , and this will probably be past their efficience range.

A descent set of cams would probably solve the problem

[R31Nismoid]

Nah, you wont need 28psi for 300.

others make around the 300-330 on approx 20psi.

but they arent as nice as a set of 2530's etc

[JAGR33]

I think you'll find that 34N1's are similar to GT-SS's, and would comfortably make 300rwkw on 20 psi, I doubt it very much they'll reach 330rwkws unless your running cams, big boost and good fuel or do a run in shoot-out . Take into consideration each dyno is different, but going by what Ben tells me they're rediculously responsive down low but do suffer a bit up top.

[GTSR22]

ok thanks for that mate. the car atm with 252rwkw does feel alot torquier down low, and at around 7000 rpm drops off alot. hopefully we should see the 300awkw barrier next week

cheers

[Z1LLA]

good luck with it greg!