SR20 - Finished with Tuning.... for now... i think @ 410rwhp

For the RWD SR20DET cars! Sponsored by Wiring Specialties.
usdm_180sx
Posts: 744
Joined: Sun Dec 21, 2003 5:50 am
Car: 1993 Nissan 240SX base S13
Contact:

Post

ZL-Auto wrote:- Body kit, last time i checked, authentic C West was not any kind of suck
Well, the hood fitment sucks ***. Nice car otherwise once you change out the wheels. Damn nice numbers too!


ZL-Auto
Posts: 953
Joined: Mon Sep 19, 2005 7:32 am
Car: Zerolift Autolab - 513-874-2508 - [email protected]

Post

The injectors came with billet "plates" that the injectors sit in and the "plates" fit into the manifold and allow for a proper fitment of the injector. I did not have any issues with installing them.

Hump in the power curve is caused my running such a low Fuel Pressure. the car literally is running out of fuel on the high boost setting. And obviously if youre running out of fuel then yes it will start to run leaner since the fuel saturation is not where it needs to be. The power curve etc will be different when the car is running 3.5-4bar of pressure. I agree with Codyace that most injectors do flow variable on their pressure. but not all injectors are "rated" at different bar of pressure. Standard measurement i believe is @ 3bar of fuel.

I know the hood doesnt fit so fantastic on the front edge, but i'm hopeful that after the summer heat gets to it, it will settle a little bit. If not, i guess i will shim up the hood brackets and try to get the nose to dive a little bit. Hood & Trunk are Seibon too, not C-West (just bumpers /skirts are Cwest). Fenders are Chargespeed.

http://www.fiveomotorsport.com...N.asp* "custom milled" fuel injectors *When my AEM tuner ordered these, he wanted to be able to run many different fuel setups, less fuel for road course lower fuel consumption, and higher fuel consumption for drag race etc, They are dependant on fuel pressure.... with 2bar of fuel being minimum you can run with these. And as told they are variant BTW 600 & 1000. They can obviously custom build a set of injectors, they do not have to be exactly what you see on their website.


codyace
Posts: 1195
Joined: Tue Apr 26, 2005 7:22 am
Car: S14 w/redtop
Contact:

Post

ZL-Auto wrote:The injectors came with billet "plates" that the injectors sit in and the "plates" fit into the manifold and allow for a proper fitment of the injector. I did not have any issues with installing them.
See, now that is nice! I ended up getting my manifold modified below to make them work:






ZL-Auto wrote:Hump in the power curve is caused my running such a low Fuel Pressure. the car literally is running out of fuel on the high boost setting. And obviously if youre running out of fuel then yes it will start to run leaner since the fuel saturation is not where it needs to be. The power curve etc will be different when the car is running 3.5-4bar of pressure.
Just set it at 3 bar or 4 bar. I would say use 4 bar for your power. No reason to keep switching back and forth...any fuel not used goes back into the tank anyway :D
ZL-Auto wrote:I agree with Codyace that most injectors do flow variable on their pressure. but not all injectors are "rated" at different bar of pressure. Standard measurement i believe is @ 3bar of fuel.
Yep. 3 bar is the standard.
ZL-Auto wrote:When my AEM tuner ordered these, he wanted to be able to run many different fuel setups less fuel for road course lower fuel consumption, and higher fuel consumption for drag race etc, They are dependant on fuel pressure.... with 2bar of fuel being minimum you can run with these. And as told they are variant BTW 600 & 1000. They can obviously custom build a set of injectors, they do not have to be exactly what you see on their website.
I have NEVER EVER EVER heard of aany tuner adjusting fuel pressure by means of tuning. That's almost crazy...

Road racing less fuel? Forget about it. That fuel will help keep your cylinders cool, and running optimally. The last thing you want is a lean car at the end of a 1/2 hour session...

Again, I say use a 4 bar fuel system (you'd have essentially 72lbers then), and use selectable maps instead of playing with base fuel pressure.

ZL-Auto
Posts: 953
Joined: Mon Sep 19, 2005 7:32 am
Car: Zerolift Autolab - 513-874-2508 - [email protected]

Post

codyace wrote:
I have NEVER EVER EVER heard of aany tuner adjusting fuel pressure by means of tuning. That's almost crazy...

Road racing less fuel? Forget about it. That fuel will help keep your cylinders cool, and running optimally. The last thing you want is a lean car at the end of a 1/2 hour session...

Again, I say use a 4 bar fuel system (you'd have essentially 72lbers then), and use selectable maps instead of playing with base fuel pressure.
If no one adjusts fuel pressure to get what they want from their engine in different situations.... then why does F1 have that option located on their steering wheel ?

http://www.f1technical.net/art...w.jpg

codyace
Posts: 1195
Joined: Tue Apr 26, 2005 7:22 am
Car: S14 w/redtop
Contact:

Post

That's like saying the world's fastest cars (Drag Cars) are better for using carbs too right? Lets keep this per application, and real world. Comparing our cars to the worlds most technical engines and platforms to prove a point is silly.

If your tuner is telling you to change base Fuel Pressure often, you need to find a new one.

Again, not hating, but think your car is probably capable of better power at the hands of another tuner....


Return to “SR20DET Forum (rear-drive)”