What power do you experts think is possible

[toldfield]

Hey, about to send the car in for a tune within the next week or 2, and interested in what you guys think, number wise, what it could be capable of making in its current setup so I will list off the mods for you, can assume things not listed to be stock.

98 R33 GTST rb25det

Apexi power fc + hand controller

exedy heavy duty clutch 

exedy lightened flywheel

forward facing plenum

race works fuel rail

turbosmart fpr 800 fuel regulator

Denso 550cc injectors 

walbro 255 fuel pump

yellow jacket coil packs

NGK BCPR7ES spark plugs (0.8mm)

exhaust system 3 inch, hi flow cat

front mount intercooler

op6 turbo (r34 GTT turbo) still low mount (looking to run 12 psi, or more, let me know what you think)

 

also if you want to throw in recommendations for what you would do with the car next would be mint for fresh ideas. No pun intended.

Thanks in advance

 

Edited March 23, 2018 by toldfield
update info

[GTofuS-T]

I'm going to start by guessing there's a 90% chance the yellow jacket coil packs will give out on the dyno and final tune deferred until replaced with splitfires, OEM or LS/Yaris/etc Conversion.

may need more detail though, target boost? boost controlled with? is it an r34 NEO or r33 rb25 or possibly even an rb20? how complete is the highflow exhaust? dump back? diameter? cat?

[GTSBoy]

Nothing in that list is going to cause a power increase unless the Neo turbo is going on to an older 25 or onto a 20.  On a 25, the power added will be small.  On a 20, it will be good for a bit more.

My Neo, with essentially that complete list above (except the things that are useless, like the plenum and the big injectors) makes 191 believable rwkW on 12 psi.

[toldfield]

thanks guys, have updated a few bits of information on the original post, rb25det, 3inch etc etc. also looking to run around 12 psi thanks for your responses 

Edited March 23, 2018 by toldfield

[admS15]

Around 190 rwkw sounds about right. If i was you, id send that turbo to hypergear and get it highflowed (around $900) before your tune. Will then make around 260rwkw and you wont be paying for a 2nd tune after your sick of 190kw.

 

You may also want to gap the plugs down to around .65 to help those yellow jackets alive.

 

Later on you could put bigger injectors in and tune for e85 and make over 300rwkw.

 

 

[GTSBoy]

Recommendations on what to do next depend on how much money you have and whether you want to go fast in a straight line or do other things safely.

Because you already have injectors and a fuel pump, following the above advice from admS15 is a good idea.  You will need to upgrade the airflow meter first though.

The first best thing is sticky tyres.  AD08R, RS3 or 4, KU36, or any of a bunch of others.

Everything else depends on the state of health of suspension and subframe bushes and so on.  You can spend 2x what the car is worth in about 15 minutes if you really want to.

[toldfield]

thanks, I'll look into sending away the turbo to get it highflowed and an afm

Edited March 23, 2018 by toldfield

[admS15]

Yep, forgot about the afm and yes you will definitely need some quality tyres to try and put the power down. Decent brake pads will also be a good idea.

[admS15]

thanks, I'll look into sending away the turbo to get it highflowed and an afm

I would also ask hypergear to swap the exhaust housing on the turbo to a 21U. Will be a fair bit less laggy with a 21U.

[Dose Pipe Sutututu]

My guess is that the turbo will eat itself, send it to Hypergear and get it high flowed before you do anything else.

No point getting it tuned twice.

[inmaniac]

Dude, my whole build thread is about doing things the wrong way (and I'm still correcting my faults) - so yeah, definitely do it right!

As mentioned, get your turbo High Flowed. I personally have got a Hypergear G3 profile on a 21U turbo, it picks up pretty quick, has no problems on 19psi and I'm not even at my final tune. For the record, I made 230rwkw on this turbo @ 14psi (couldn't hold boost at the time due to wastegate). If you're playing the long game, you can high flow your OP6 housing for more future power, or as ADM said, go 21U for quicker response. Not sure on your boost control plan?

As for the AFM, don't make my mistake and buy a cheapie. Get a genuine Bosch Z32 unit. Will cost $250-$320.

Ditch the Yellow Jackets. If you absolutely can't spend the money on Splitfires, then gap plugs down as mentioned.

Also ensure you've completed the relay mod on your fuel pump so you get full voltage and full juice.

If I was in your shoes right now, I'd be going:

• High Flow Turbo
• Decent EBC
• Z32 AFM
• Splitfires
• Relay Mod

For approx $1800-$2200 in parts you'd then achieve 240-260rwkw. 

Check out my build thread in the sig. I've gone through all of this already (as have many others on this forum).

[-S-]

Dude, my whole build thread is about doing things the wrong way (and I'm still correcting my faults) - so yeah, definitely do it right!
As mentioned, get your turbo High Flowed. I personally have got a Hypergear G3 profile on a 21U turbo, it picks up pretty quick, has no problems on 19psi and I'm not even at my final tune. For the record, I made 230rwkw on this turbo @ 14psi (couldn't hold boost at the time due to wastegate). If you're playing the long game, you can high flow your OP6 housing for more future power, or as ADM said, go 21U for quicker response. Not sure on your boost control plan?
As for the AFM, don't make my mistake and buy a cheapie. Get a genuine Bosch Z32 unit. Will cost $250-$320.
Ditch the Yellow Jackets. If you absolutely can't spend the money on Splitfires, then gap plugs down as mentioned.
Also ensure you've completed the relay mod on your fuel pump so you get full voltage and full juice.

If I was in your shoes right now, I'd be going:

• High Flow Turbo
• Decent EBC
• Z32 AFM
• Splitfires
• Relay Mod

For approx $1800-$2200 in parts you'd then achieve 240-260rwkw. 

Check out my build thread in the sig. I've gone through all of this already (as have many others on this forum).

U received my pm? Lol ;p