Thread: What to do for extra power?

You all know of my VET build. The car is done and is being broken in. I feel like the car is in the 350whp range but what can I do to get more power. I am running the JWT computer. the tune is for 740cc injectors, VE turbo, 9:1 compression (though I am currently at 8.5:1) and the Z32 maf.

The maf is blow-through right now, but I would be willing to try the pull through to see how it affects power. I am loving the response though. by 4200rpm I have a full 16psi of boost! I feel like there is some tuning to be done with the FPR to lean the mixture out slightly. Also the tps needs adjustment.

Just curious for those who run DETs, about how much more power is left untapped from this motor. I would love to see 375-380whp or so on this same boost level. or about 400whp on 18psi.

So what do you all think?

get something to tune with, like a standalone or calum realtime ecu, that way you can play with the timing maps to, just leaning it out will help if it is to rich, but timing is where it is at as well

I have been toying with the idea to go calum. But I feel bad if I need someone to hold my hand. The calum ecu is awesome and I wanna do it. But the cost is hard to justify when I have already invested in the JWT. Sigh.

I don't know how normal this is, but my AF ratio is about 10.3-10.8 right now in boost. I am running pump gas 91 octane. I am also at 4500 ft elevation and my atmospheric pressure is only 13.0 instead of 14.7 like sea level.

My timing map is weird as well. As soon as I go positive on the boost it pulls timing to around 17 or so. Then it drops to 15 til about 6500rpm. Then by 7 it is about 18. The highest I have ever seen the timing is 19 btdc.

Is this too conservative for pump gas or am I good? I have been told that I should not go leaner than 11:1 but others are telling me that 12 is safe for pump.

It has alot to do with tuning.....I've had luck with the jwt/safc combo in the past.

I may try to map trace the stock DET timing map on the VET and see what happens. Would this be safe at all? I tried it once on 10psi and it made a huge diff, but its a pita to hook up this laptop every time I drive the car. Plus there is a short in the power cord so it will just shut off sometimes. it is a very old laptop.

I would love to hit 400whp and keep it on pump gas. I don't plan on upping the boost for a long time.

bump. Anyone have the timing map for a stock DET?

i picked up around 50 hp getting my car from 10.3ish -1 to the 11.5-1 area and thats at 12 lbs of boost on a gti-r.

you can get a calum basic if you know someone who can burn your chips or just get the real time if your going to be tuning a lot.

Everyone here tells me to shoot for a 12.0:1 but I don't know if that is safe for pump gas. I am limited to 91 so I want to stay a lil safe. But I know how it is now it is really rich and the timing is way conservative. I just want to look at a good starting point for getting this car to run really good numbers. It seems all the Utahnissans fwd crowd are getting no more than 360whp. No other VE-Ts here though. I really just want to see the VE-T outperform the DETs out here.

even on pump gas go to at least 11.5:1 and you should be fine. I wouldnt go to 12:1 with your setup unless you had a mix of racegas even 100 octane if they have it in your area. if you get the a/f ratio to 12:1 you will be in the 400whp range easily and that is a lot for pump gas especially 91 octane. Your setup is great, just needs some fine tunning. You might be able to adjust your base timing a bit farther advanced also. then play with the afpr. 1 psi at a time and monitor it from there.

I am hoping that you can make 400whp on Pump ....I hope I can , with the differant turbo and intake manifolds and turbo housing , good luck