More fuel

[boostinhard]

ey,
I need to get more fuel into my motor so it can run 20psi and I have a few options on doing this...
1. Bigger injectors
2. Extra injector controlled by fully mapable microtech output
3. Rising rate fuel regualtor

All have a fairly similar price involved and all ill need another dyno tune. Just wanted to know what people have had experience with and what they recomend/dont recomend. thanks,
sam

[Lonx]

I don't have experience with this, but the extra injector design has some benefits over upgrading all of your injectors. Benefits include a better idle, better cooling of intake/force air (if injector is placed correctly) and probably better economy off-boost.

Rising rate fuel pressure regulator is an alright idea, but I think if you increased the fuel pressure much past what the injector was designed to handle, you will have spray/atomization problems. Hope this post helps you anyways, good luck.

[boostinhard]

Hey,
yeah - knew those benefits of the extra injector (apart from the cdooling thing - good point!)... So far - that may be the go then...
sam

[Lonx]

Well boostin, the other option is to run the extra injector with methanol.... apparently it is very efficient at dropping temperatures as well. Just thought I'd suggest this as I didn't think of it before. Good luck mate, I'll oogle over your exa no doubt one day when I see it :)

[chris2]

tbut that would require a dedicated fuel system for 1 only meth, probably blowing cost out, send it to dom for the transistor be fitted, will only have to adjust m/fueller only, not whole map as such.

[Lonx]

No, with meth you can run it through a water spray pump (typically run at 100 - 120psi) which can be bought for 100 - 200 i think. Then add a washer bottle as your meth resevoir & some fuel line. Cheap effective meth.

[Mervic]

Hey Boostinhard, just curious, Do you have the E15t engine? Also what kind of turbo do you have? In response to your question, have you changed the MAF sensor with a bigger one? A lot of turbo Sentras(usually SR20DET's and some GA16DET's) here in NA with high boost usually replace it with MAF and injector from a Maxima or 240SX(Silvia) with the KA24DE i believe but with a modified ECU from JWT. Sentras with higher HP (in excess of 300HP) favorite to use is the MAF from Ford Mustang Cobra. Me and my brother have a summer project of boosting his Celica, so I kinda getting some infos. Thanks.

[boostinhard]

Hey,
yeah chris - I'll be down for that as soon as my check come for a certain dent in my buimper for a certain lunch van!!! I'll rip her out then and send her off to dom for transistor fittment...

Mervic, yeah - I run the e15t engine, but no MAF sensor. Im running an aftermarket ecu which works off a MAP sensor and T.P.S readings... MAP sesnors are much easier to work with when your playing with modified engines...
sam