performance help with my rb25det

[RBboost'd_240]

Ok so recently my timing tensioner gave out so while I have the motor out I want to beef my motor up. My goal is to be in the area of 400 to 500rwhp. My current mods are greddy fmic hks bov garrett gt35r turbo greddy intake manifold 4in custom exhaust tial 44mm external wastegate walbro 255 fuel pump exedy 4 puck clutch lightened flywheel. I was trying to get you guys help with what will help me out get more power and closer to my goal.
Modified by RBboost'd_240 at 1:35 PM 3/24/2010

[GSDKinked]

Ok so recently my timing tensioner gave out so while I have the motor out I want to beef my motor up. My goal is to be in the area of 400 to 500rwhp. My current mods are greddy fmic hks bov garrett gt35r turbo greddy intake manifold 4in custom exhaust tial 44mm external wastegate walbro 255 fuel pump exedy 4 puck clutch lightened flywheel. I was trying to get you guys help with what will help me out get more power and closer to my goal.

Modified by RBboost'd_240 at 1:35 PM 3/24/2010

umm tuning....lots of it. And fuel.

[RBboost'd_240]

Right now its tuned by a safc II would I see a huge difference if I add hks or tomei cams? Or if I get a aem ems and not run a maf?

[Cidate]

Right now its tuned by a safc II would I see a huge difference if I add hks or tomei cams? Or if I get a aem ems and not run a maf?

how do you tune with safc II? that s***s useless... but thats just your taste i guess.... i HIGHLY suggest investing in a good EMS. esp if your "tuning" with a safc. that and some more tuning and injectors why not replace the oil pump and water pumps while its out go get some baller oil pump haha

[Joe]

Right now its tuned by a safc II would I see a huge difference if I add hks or tomei cams? Or if I get a aem ems and not run a maf?

how the s*** are you running a GT35r with a SAFC? what size injectors? your car sounds like a time bomb.

[RBboost'd_240]

how the s*** are you running a GT35r with a SAFC? what size injectors? your car sounds like a time bomb.

That's how I bought the car I don't like afc controllers that's why I'm asking you guys what route I should take and I am changing the water pump when I do the timing belt

[RBboost'd_240]

Also what ems's would you guys recommend using? What size injectors and cams as well this is a daily driver

[GSDKinked]

Also what ems's would you guys recommend using? What size injectors and cams as well this is a daily driver

AEM, Haltech, PFC something that is standalone for your goals. And with that 35R you're goin to be waiting for it to hit. And it really will be like an on and off switch. And you still haven't answered the question of what size injectors are you running. Step down in turbo size, pick up some sort of EMS (even nistune will work), 740cc+ inj and find a reputable tuner. But realize that 500whp or 600whp is ALOT of power

[RBboost'd_240]

AEM, Haltech, PFC something that is standalone for your goals. And with that 35R you're goin to be waiting for it to hit. And it really will be like an on and off switch. And you still haven't answered the question of what size injectors are you running. Step down in turbo size, pick up some sort of EMS (even nistune will work), 740cc+ inj and find a reputable tuner. But realize that 500whp or 600whp is ALOT of power

Right now side feed rc 550s and what size turbo would be good that would spool fast and be good on tghe power I'm looking for? And I want to be right at 450 to 470rwhp nothing more. So for this mark as well will I need to look into cams and any other head work?

[Cameron]

get a GT3076r that will get you where you want and will be pretty responsive for that amount of power. 3071's and 3076's seems like they were made for RB's

you could easily replace that 35r with a 3076 hell maybe even trade for one haha.

check out the response on this 76r

http://www.youtube.com/watch?v...ex=64

[GSDKinked]

Right now side feed rc 550s and what size turbo would be good that would spool fast and be good on tghe power I'm looking for? And I want to be right at 450 to 470rwhp nothing more. So for this mark as well will I need to look into cams and any other head work?

Key thing is research my friend, you want a turbo that flows anywhere between 45-50 (at most) lbs/min CFM. This matches the RB25DET damn near perfectly. As far as injectors, you're going to need to go larger than that in order to have adequate fueling, and don't forget a fuel pressure regulator as well. If you want more from your upper midrange and top end then cams are the way to go but for a street going car they aren't necessary. Headwork isn't necessary unless you upgrade valvetrain and plan on running to the upper limits of that 35R.

[GSDKinked]

get a GT3076r that will get you where you want and will be pretty responsive for that amount of power. 3071's and 3076's seems like they were made for RB's

you could easily replace that 35r with a 3076 hell maybe even trade for one haha.

check out the response on this 76r

http://www.youtube.com/watch?v...ex=64

haha funny you posted that because they will be tuning my set up and are right behind my house haha. Good shop though

[Cameron]

nice ill be getting tuned here at balanced performance in the next couple weeks.

[RBboost'd_240]

What's the most psi the rb25 can handle daily and on the drag strip

[240z4u]

What's the most psi the rb25 can handle daily and on the drag strip

Eleventeen

[RBboost'd_240]

Eleventeen

Come man I'm just trying to get some help

[GSDKinked]

Come man I'm just trying to get some help

I think like 12 on the stock turbo. but since you're running the 35R and with a sketch tune I wouldn't push it past 10psi to be honest. Rather be safe than sorry.

[240z4u]

Oh fine, since you are whining!

If you have some sort of EMS installed, strap it to a dyno, monitor AFR's and knock and start upping the boost.

See the thing is, boost is somewhat of an arbitrary number. 17psi on a stock snail vs. your 35R is totally different flow wise. You can't just hop in for the first trip out and crank it up to whatever sounds good safely.

I do and have run mid 20s on the street in boost, but since we don't have the same turbochargers it is hard to compare.

Evan

[Cidate]

Oh fine, since you are whining!

If you have some sort of EMS installed, strap it to a dyno, monitor AFR's and knock and start upping the boost.

See the thing is, boost is somewhat of an arbitrary number. 17psi on a stock snail vs. your 35R is totally different flow wise. You can't just hop in for the first trip out and crank it up to whatever sounds good safely.

I do and have run mid 20s on the street in boost, but since we don't have the same turbochargers it is hard to compare.

Evan

quit spoon feeding this kid... we all gave him plenty of advice to send him in the right direction. hes asking generalized question and wanted to be spoon fed the information and s***. hes clearly got the internet, so hes got access to google, the search button up top and various other resources. btw this is not an attack at you 240z4u so dont take it like that haha anyways.... op QUIT BEING LAZY AND GO READ UP SOME!