How much power should i be making?

[ookami]

I think my car is down on power compared to others I have heard about with simliar setups.

Current mods;

Nismo fuel pump

555cc Nismo Injectors

HKS GT2835 Pro S turbo (420ps)

Tomei 270 Degree cams

Full 3" exhaust.

Greddy Plenum

HKS front mount

HKS Fcon V pro ECU (Map sensor type)

So far the best power i have managed to produce is 320rwhp on 1.3 bar. To me it seems kind of average, cause i've heard of other people making 380-400 rwhp, on this turbo. The tune in my ecu was done in Japan and its fairly rich around low 11:1 afr but would this be making that much difference? How much HP should i be making? I'm changing over to a Power FC D-Jetro, just so i can get someone to tune it here in australia in hope to gain more, but what power levels should i expect, or am i expecting too much from this turbo?

[ookami]

surely someone has an opinion on this turbo/setup?

[rob82]

I recently bought a GTR from Japan with an Impul tuned EPROM in it. The barstards glue the EPROM to the board so you cant read it - however this didn't stop me and I was able to pull the PROM and read the data. I really wasn't that impressed with there tune - very conservative all round, fuel was too rich in top end 11-10.5 and timing was very shy through power. Knock parameters where standard (not that it matters in the topend).

Could be a blocked cat as well or some kind of inlet restriciton. My advice would be to check the cat/restrictions and then either get the ECU re-tuned or PFC.

[paulr33]

250rwkw sounds pretty good check the rb25det turbo upgrade dyno thread, i think theres at least one other 2535 turbo. your at about the max of the 2535 turbo as far as i can recall going from the ps rating. i dont see how the powerfc d-jetro will give you more power. it will be easier to tune with the normal powerfc and a z32

[krzysiu]

Hey ookami, i also have the 2835 and managed 333rwhp on 15 pounds (tiny bit over 1 bar) without PowerFC. Something has to be holding you back...

[benl1981]

Hey Kryzsiu - you got that without a powerfc? Do you have a SAFC or something to lean out the mixtures. I thought your stock ecu would freak out with all the airflow.

[ookami]

Hey ookami, i also have the 2835 and managed 333rwhp on 15 pounds (tiny bit over 1 bar) without PowerFC. Something has to be holding you back...

you made 333hp with a stock ecu? you sure? My car is junk then!! I've got a greddy plenum and bigger cams and everything too!! Is yours the 2835 pro s with the weird Exhaust flange?

[hungry6]

I recently bought a GTR from Japan with an Impul tuned EPROM in it.  The barstards glue the EPROM to the board so you cant read it - however this didn't stop me and I was able to pull the PROM and read the data.  I really wasn't that impressed with there tune - very conservative all round, fuel was too rich in top end 11-10.5 and timing was very shy through power.  Knock parameters where standard (not that it matters in the topend).  

Could be a blocked cat as well or some kind of inlet restriciton.  My advice would be to check the cat/restrictions and then either get the ECU re-tuned or PFC.

How did you manage to get the epoxy resin of the eprom? I also tried to pull one of a board, but my fingers aren't as strong as your.

[rob82]

With a heat gun and lots of patience.

[HeathGTST]

I had RB25DET

Standard injectors

HKS 25/35 turbo

PFC

Full Zorst - turbo back

POD filter

HKS front mount chiller

14psi

250-260 rear wheel killowats.... Very tastey

Thats my 2cents

[Abo Bob]

Tuning is most likely the issue. Should be able to get at least another 30rwkw from that.

[ookami]

some people must have weird dyno readings or something. I don't understand how they make more power on less boost. I know i would gain some power with a decent tune, but some people are claiming on stock injectors. how does that work?

[The Mafia]

I'd ditch the ecu and get yourself a powerfc, or if you really want something that has alot of features (and so you can toss the afm) get a link, haltec, or autronic.

****, you'll get alot more power with a good tune, judging by the mods you've already done.