ok, first off, im new to z33's, but not modded cars, been doing it a long time. worked on everything from big block mopars to supras, i even had a 7mgte in a s30 a while ago. but some things about the z33 and more specifically, turbocharging them is confusing me. maybe its stock compression, maybe its sounds too good to be true. but i need help with 2 major things i seem to be having trouble with.

1) the easy one. am i reading this right? if you buy an aps/greddy TT kit it comes with a fuel system and the engine management you need? no need to buy a stand-alone, no need for an safc? no need to buy bigger injectors? it all comes complete?

2) the harder one. I currently own a 90 supra, i built my brother an sr. we both have upgraded turbos, i use a 61mm, he uses the gt28rs bolt on. my motor is build, 9:1/ his is 8.7:1. why am i telling you this? because the boost pressure on your cars seems insanely low. a lot of you are making well over 500rwhp at 15psi? is this on pump 93-94 oct.? i knwo the extra .5 liter you have on my supra makes a difference, but i make 470ish at 18-19psi on pump? so you make 40-60 more hp at 3 psi less? i wouldnt think .5 would make that big a difference. but maybe?

im sure i sound dumb, i tried reading through posts, i see the info, but i guess im just asking.. seriously?

 

#1. yes there are complete kits available, where you will just need to fine tune the system after install. but ofcourse you know, clutch and exhaust and gauges are all part of the picture too.

#2. the numbers you posted for reference run right in line with both motors making the same hp per liter. so the advantage is the cubic inches.

 

1. It depends what your horespower goal is. If your pushing for 450+ rwhp you will need larger injectors than what is supplied in the APS or Greddy kit. If you want to do things right the only way to do that currently without going to a standalone ECU is the Turbo XS UTEC paralell engine managment. It's not a piggyback like the EU, and is a much better solution for tuning. The only way in my opinion. Only a few tuners can tune the APS kit. Anyone can tune a UTEC. The Greddy does not come with BOV's or an intercooler. You can get the Greddy kit + intercooler kit for $5300.

Respect
JET

 

this is the fi forum?

yah, i just cant see it from the .5 liter, there must be something im missing, maybe its in the stroke, whats stock c/r on a vq? i used to have a 1jz supra, now i have a 7m, for those who dont know, the 1jz is a 2.5, the 7m is a 3.0, and i have put my exact turbo on a few 1jz cars and its not that much difference, so these guys make 500rwhp on pump at 16psi? i might have to ditch my supra and go full out on this thing.

 

Never mind... I'm the resident idiot here. Nice to meet you.

Respect
JET

 

peace

 

Sharif, Julian or Gus are probably the guys to answer this...

I just contribute money for results

P.S. Sharif's sig. suggests that he is at 622whp at 16.5psi. His engine his built.

 

more than aware of the fact that different turbos perform different at different psi on different engines. i started thinkin about it, makes since, someone made a kit of twin 18gs on a 2jz once, he did just around 500 at 18psi on pump.

didnt realize the c.r was that high, i hate to say it, but that has a whole lot to do with it. when i bumped 8.3 to 9 i got a big jump in performance, so that another 1.3. and with the extra .5 liter... thats mostly it. that would more than account for a 40hp difference also given a v formation engine is more efficient at making power anyway. you guys answered my questions.

So those with 8.5 pistons, and making 600rwhp, should be doing it at 17-18psi. but if they are doing that on pump, which is more than feasable with a decent cam upgrade, spacer, and a good exhaust... like i said before, i may have to ditch the poopra

 

Its not the Best V6 in the World for nothing

 

^hellz yeah

 

well, if i ditch the toyota ill have an all nissan sports car garage.