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How much bigger can I get...... ? YOu've seen my exhaust. If 4" can't do it I am screwed. I'll show you the difference when we put in the blitz.

see it on a positive note..... your car will become a Sauna therefore you'll be shedding some pounds not to mention opening up your pores on your epidermis which contributes to the release of toxins in your body.......

I had a conversation with Tissimo asking about timing and its purpose. After that I started to research and this is what I found. Thought I could share with you guys The stock 1jz ECU has a very conservative timing map. Follow me in this senerio: Stock Twins, 1st gear @ 1500rpm you feel the...

I would not do that. The Map is relative the ECU not the injectors. Keep 1j with 1j. Let the Ecu compensate for the upgrade. If it can't compensate then you'll need add'l device such SAFC or EMU to correct the Fuel map. But in this case 440cc are within the correction of the Stock ECU...

That's a negative batman. You'll never max out the the 440's with stock twin, but you can push them really hard to come close to that.

300 stay with stock 380-400 440's is the way IMO

FROM THE BACKSIDE.....OUCH

LOL, Ali you're busted....!:biglaugh:

Exactly...

I was on 93 pump.

431 you are well over 80% duty cycle on the 440's. So one night I was toying around with the boost controller, did a few 3rd gear pulls on the hwy and never switched it back to were it was tune for. The next day on the hwy I was running a few cars, was in 4th, hit 5th then BOOM....oil...

I blue printed the manifold & downpipe for the twin gt28. So if someone want a kit I should have one made within a week or so. Not sure what the price would be but it seem like It should land in the 650-750 range. I want make sure they are cheap enough for ppl to afford with out forsaking...

IF you want to retune, try Gary at Speed injected. He did my car and it's running nice. He tuned the low for good fuel economy, plus he'll max out your tuned then pull back a bit for safety. With 440cc inj, you should sit around 400rwhp on the safe side.

I have a 1jz'd 240sx with a twin gt28r. Clint I am not sure what is the iscv, but I suspect it's the pipe at the back of the turbo-side valve cover. If so put a filter there, that needs to suck in air while idle, otherwise your car will shut off.