-7/9s Or -5s Garretts

[(OO)SKYLINE(OO)]

I run -7's with a shitty exhaust and stock afm's. With id1000's and a walbro 400 fuel pump I make 325kw on 20psi with E85. If I fix my exhaust and chuck some bigger afm's on I'd probably crack 350kw.

It'd be much easier to do it with -9's and I don't think there would be much more lag involved.

What exhaust you going for?

[Piggaz]

Ok, had a play.

Your car is obviously tuned in 3rd gear going by the speeds. It's a bit rough but you get the idea.

3950: N= 176 P= 215

4400: N= 252 P = 300

4800: N= 306 P = 375

5244: N = 326 P = 415

5644: N = 344 P = 445

6100: N= 350 P= 460

6500: N = 342 P = 472

Take into consideration how they were loaded up for the runs and whatnot.

[TheGeniusMoose]

Just out of curiosity...

I have a set of -5s on my std RB26DETT and i'm only making 300kw on 22psi...

The things I noticed are my actuators are set at 8psi and I have 600cc injectors coupled with a Walbro 255 pump.

Are these going to be an issue or is it a tuning issue?

EDIT- Using 5speed from RB25 and 4.08 S14 Diff in an S15

Edited April 18, 2013 by TheGeniusMoose

[Piggaz]

I'd be asking why it's only making 300 at 22. There is something wrong there!

[TheGeniusMoose]

Thats what im trying to figure out! My injectors hit 100% duty cycle on full boost thats why I thought my pump or injectors were maxing out but doesnt make sence I should be making 300kw on less than 20psi id have thought...

Previously I had valve float but that has been rectified.

Edited April 18, 2013 by TheGeniusMoose

[Piggaz]

600's to make 300 ain't right either. Your pump can't keep the pressure up or something.

[TheGeniusMoose]

Well the 255L was an upgrade on the SR lol. What should I be aiming for when I buy a new one?

[gtr jet]

What exhaust you going for?

Nothing at the moment as I'm content with the power. I think I'll get more gains if I upgrade my actuators 1st and see how I go.

Eventually I'll rip the cat out and the 3" exhaust and replace it all with 3.5".

[levinboy]

Ok, had a play.

Your car is obviously tuned in 3rd gear going by the speeds. It's a bit rough but you get the idea.

3950: N= 176 P= 215

4400: N= 252 P = 300

4800: N= 306 P = 375

5244: N = 326 P = 415

5644: N = 344 P = 445

6100: N= 350 P= 460

6500: N = 342 P = 472

Take into consideration how they were loaded up for the runs and whatnot.

Was 4th gear he doesn't tune in 3rd

[Piggaz]

Was 4th gear he doesn't tune in 3rd

If that was the case then the run would be only going to 5000 ish rpm. Unless the speed scale is out.

[Piggaz]

Well the 255L was an upgrade on the SR lol. What should I be aiming for when I buy a new one?

The pump provided its getting the right voltage should have an issue with that power. I think it's time to put your inspector gadget hat on and start investigating.

[R31Nismoid]

I'd say, once again, attention to detail on the setup is where the better results are. Big, size matched exhausts blah blah.

Got a sheet Nick?

Exactly.

I had 340rwkw with -9s on 98, but it wasn't a stock engine - and that is where the extra bits/gains come from

[levinboy]

If that was the case then the run would be only going to 5000 ish rpm. Unless the speed scale is out.

Who knows ay

Soon find out when I get it retuned

It works that's all that matters

[Piggaz]

E85?!?!?!?

[(OO)SKYLINE(OO)]

Nothing at the moment as I'm content with the power. I think I'll get more gains if I upgrade my actuators 1st and see how I go.

Eventually I'll rip the cat out and the 3" exhaust and replace it all with 3.5".

I see!

An actuator upgrade will do it good.

Yeah, if you want to get over the 350 rwkW mark, go 3.5".

Exactly.

I had 340rwkw with -9s on 98, but it wasn't a stock engine - and that is where the extra bits/gains come from

+1

[TheGeniusMoose]

Other thing is the turbos are REALLY laggy.

I get 18psi by 6000rpm and power drops off completely at 22psi at 7500rpm so theres no point revving past there...

The pump provided its getting the right voltage should have an issue with that power. I think it's time to put your inspector gadget hat on and start investigating.

[gtr jet]

I see!

An actuator upgrade will do it good.

Yeah, if you want to get over the 350 rwkW mark, go 3.5".

That's the plan when I think I need more power.

[levinboy]

E85?!?!?!?

I will be doing this when there is pumps near me

And my new daily is purchased

[Piggaz]

I will be doing this when there is pumps near me

And my new daily is purchased

Ethanol Content Sensor. Next excuse!!!

[Piggaz]

Double post!