What mods should i do next and what boost can i run - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

turboex · 06-02-2003, 06:01 PM

Ok heres what i have so far.. 92 240sx, sr20det redtop
Vlsd
custom front mount
greddy bov
turboxs dual stage boost controler
3inch down pipe
3inch test pipe
n1 exhaust
open element air filter
tublar manifold "project silvia style"
HKS 2530 turbo
255lph fuel pump

what boost can i push with just this setup, oh i still have a stock head gasket too. and what mods would you guys do next? as of now im running 5psi to play it safe untill i get some info on what i can push it too. thanks

**mrmephistopheles** · 06-02-2003, 06:26 PM

Seeing as how stock boost is 7psi, you should be able to run 10 or 12 pounds with no worries at all, IIRC, the the stock fuel system is capable of handling ~1 bar (14.7psi). Anything beyond that is risky..

turboex · 06-02-2003, 06:29 PM

How will i know im reaching the limits of the fuel sysyem? thanks for the help. will the fact that the turbo is bigger and moreefficiant cause me torun out of fuel at a lower psi? the turbo is about one and a half the size of the stocker. thanks again

**mrmephistopheles** · 06-02-2003, 06:38 PM

Aw crap
I didn't even notice the fact that you had a larger turbine.

You'll know you're running low on fuel if you monitor your EGT (you DO have an EGT, yes?) and your temps get really high.. or you watch your A/F meter and you go waaay lean.

turboex · 06-02-2003, 06:41 PM

my egt stays at 12 cruzing and gets to 12.5 when i push it.

popey · 06-02-2003, 08:27 PM

Ever thought about a new radiator and fans? Those might help out on the cooling aspect... Just a thought, I didn't see these in your mod list, maybe you left them out.

-matt

turboex · 06-02-2003, 08:33 PM

that was the temp with my car running the side mount, sorry. I have not looked at it with the front mount but my water temp never goes above half way up, even when im on it hard.

lbcklik1486 · 06-02-2003, 08:43 PM

Either way your going to need fuel sooner or later. Might as well just save up for some bigger injectors. If not, you could get an ecu for awhile to help better compensate w/ the bigger turbine.

-Jay

hokiruu · 06-03-2003, 10:07 AM

Quote:

Originally posted by lbcklik1486
Either way your going to need fuel sooner or later. Might as well just save up for some bigger injectors. If not, you could get an ecu for awhile to help better compensate w/ the bigger turbine.

-Jay

Yes, you will need fuel management, but that is not going to change the fact that your stock 370cc injectors will be well past their duty cycle. You might as well not get an ECU if the injectors you're supposed to be controlling it with can't physically supply the fuel you are telling them to. Get at lest some 550s, and very soon, because you're running lean past 14psi.

turboex · 06-03-2003, 05:02 PM

Quote:

Originally posted by hokiruu
Yes, you will need fuel management, but that is not going to change the fact that your stock 370cc injectors will be well past their duty cycle. You might as well not get an ECU if the injectors you're supposed to be controlling it with can't physically supply the fuel you are telling them to. Get at lest some 550s, and very soon, because you're running lean past 14psi.

What boost do you recomend I say below as of right now? thanks
Oh and wheres a good palce to get the injectors? thanks again

lodder · 06-03-2003, 09:35 PM

Denso, Nismo, Apexi (from enjuku racing) all make side feed units for it. Depending on how far you want to go, you can get 550cc or you can go with bigger ones so that your not maxed out when you go bigger turbo. 2530 is a nice upgrade, but they get bigger and we all like to go faster sooo... Anyways try to find some with the same impedence, you won't have to screw around with the ecu in getting it reprogramed. Some of the guru's on the forum should know if they are high or low impedence. If you want to go higher with the stock injectors you can go with an adjustable fuel preasure regulator. Just make sure that the injectors don't go static (they don't open or close anymore they just stay open)

hope this helps.

turboex · 06-03-2003, 09:41 PM

yeah man this info really helps i apriciate it. would i need a new maf too?

lodder · 06-03-2003, 09:54 PM

the stock maf is just a real restriction when flowing air the way bigger turbos do. You can get z32 mafs and what not and Q45 mafs work too. But I think you'll have to get the rom change done for that.

06-02-2003, 06:01 PM	#1
turboex Zilvia Member Join Date: Oct 2002 Location: minot ND Posts: 252 Trader Rating: (0) Feedback Score: 0 reviews	What mods should i do next and what boost can i run Ok heres what i have so far.. 92 240sx, sr20det redtop Vlsd custom front mount greddy bov turboxs dual stage boost controler 3inch down pipe 3inch test pipe n1 exhaust open element air filter tublar manifold "project silvia style" HKS 2530 turbo 255lph fuel pump what boost can i push with just this setup, oh i still have a stock head gasket too. and what mods would you guys do next? as of now im running 5psi to play it safe untill i get some info on what i can push it too. thanks

06-02-2003, 08:43 PM	#8
lbcklik1486 Zilvia Junkie Join Date: Jan 2003 Location: Western Springs, Illinois Posts: 303 Trader Rating: (0) Feedback Score: 0 reviews	Either way your going to need fuel sooner or later. Might as well just save up for some bigger injectors. If not, you could get an ecu for awhile to help better compensate w/ the bigger turbine. -Jay __________________ Your car has 4 more liters, and it's unfair to race because I have a turbo huh?

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06-02-2003, 06:26 PM	#2
mrmephistopheles Magnanimous Justice Distribution Service Join Date: Mar 2002 Location: BFE Age: 23 Posts: 14,372 Trader Rating: (9) Rides Gallery: mrmephistopheles Feedback Score: 9 reviews	Seeing as how stock boost is 7psi, you should be able to run 10 or 12 pounds with no worries at all, IIRC, the the stock fuel system is capable of handling ~1 bar (14.7psi). Anything beyond that is risky..

06-02-2003, 06:29 PM	#3
turboex Zilvia Member Join Date: Oct 2002 Location: minot ND Posts: 252 Trader Rating: (0) Feedback Score: 0 reviews	How will i know im reaching the limits of the fuel sysyem? thanks for the help. will the fact that the turbo is bigger and moreefficiant cause me torun out of fuel at a lower psi? the turbo is about one and a half the size of the stocker. thanks again

06-02-2003, 06:38 PM	#4
mrmephistopheles Magnanimous Justice Distribution Service Join Date: Mar 2002 Location: BFE Age: 23 Posts: 14,372 Trader Rating: (9) Rides Gallery: mrmephistopheles Feedback Score: 9 reviews	Aw crap I didn't even notice the fact that you had a larger turbine. You'll know you're running low on fuel if you monitor your EGT (you DO have an EGT, yes?) and your temps get really high.. or you watch your A/F meter and you go waaay lean.

06-02-2003, 06:41 PM	#5
turboex Zilvia Member Join Date: Oct 2002 Location: minot ND Posts: 252 Trader Rating: (0) Feedback Score: 0 reviews	my egt stays at 12 cruzing and gets to 12.5 when i push it.

06-02-2003, 08:27 PM	#6
popey Zilvia Member Join Date: Dec 2002 Location: Texas Age: 43 Posts: 191 Trader Rating: (0) Feedback Score: 0 reviews	Ever thought about a new radiator and fans? Those might help out on the cooling aspect... Just a thought, I didn't see these in your mod list, maybe you left them out. -matt

06-02-2003, 08:33 PM	#7
turboex Zilvia Member Join Date: Oct 2002 Location: minot ND Posts: 252 Trader Rating: (0) Feedback Score: 0 reviews	that was the temp with my car running the side mount, sorry. I have not looked at it with the front mount but my water temp never goes above half way up, even when im on it hard.

06-03-2003, 09:35 PM	#11
lodder Join Date: May 2002 Posts: 38 Trader Rating: (0) Feedback Score: 0 reviews	Denso, Nismo, Apexi (from enjuku racing) all make side feed units for it. Depending on how far you want to go, you can get 550cc or you can go with bigger ones so that your not maxed out when you go bigger turbo. 2530 is a nice upgrade, but they get bigger and we all like to go faster sooo... Anyways try to find some with the same impedence, you won't have to screw around with the ecu in getting it reprogramed. Some of the guru's on the forum should know if they are high or low impedence. If you want to go higher with the stock injectors you can go with an adjustable fuel preasure regulator. Just make sure that the injectors don't go static (they don't open or close anymore they just stay open) hope this helps.

06-03-2003, 09:41 PM	#12
turboex Zilvia Member Join Date: Oct 2002 Location: minot ND Posts: 252 Trader Rating: (0) Feedback Score: 0 reviews	yeah man this info really helps i apriciate it. would i need a new maf too?

06-03-2003, 09:54 PM	#13
lodder Join Date: May 2002 Posts: 38 Trader Rating: (0) Feedback Score: 0 reviews	the stock maf is just a real restriction when flowing air the way bigger turbos do. You can get z32 mafs and what not and Q45 mafs work too. But I think you'll have to get the rom change done for that.