Increasing boost.... couple questions - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

sr20drft · 04-22-2005, 10:05 PM

Question foryou guys. I've been reading around for opinions on what to run on a stock t25 turbo, and everyones answers are different. I was wondering what you think I should run with these mods, and if you have any input on what settings to get it at with the AVC-R, thanks:

Apexi Turbo Timer
Apexi EL2 Black Face Boost Gauge
Apexi N1 EXV Coilovers
Apexi N1 Downpipe
Apexi N1 Evo 1 Piece Catback Exhaust
Apexi Super Intake Kit
Apexi Twin Chamber Blow Off Valve
Apexi AVC-R
JDM Viscous LSD & 5 Bolt Axles
Kazama Testpipe (3")
R34 GTR Fuel Pump
Racing Battery
NGK Iridium IX Sparkplugs (BKR6EIX-11)
Greddy VSPL FMIC Kit 24V

statik · 04-22-2005, 11:23 PM

you can safely run 15psi with that fuel pump/fmic, thats maxing the stock turbo

s14srpilot · 04-22-2005, 11:30 PM

Quote:

Originally Posted by sr20drft

Question foryou guys. I've been reading around for opinions on what to run on a stock t25 turbo, and everyones answers are different. I was wondering what you think I should run with these mods, and if you have any input on what settings to get it at with the AVC-R, thanks:

Apexi Turbo Timer
Apexi EL2 Black Face Boost Gauge
Apexi N1 EXV Coilovers
Apexi N1 Downpipe
Apexi N1 Evo 1 Piece Catback Exhaust
Apexi Super Intake Kit
Apexi Twin Chamber Blow Off Valve
Apexi AVC-R
JDM Viscous LSD & 5 Bolt Axles
Kazama Testpipe (3")
R34 GTR Fuel Pump
Racing Battery
NGK Iridium IX Sparkplugs (BKR6EIX-11)
Greddy VSPL FMIC Kit 24V

FYI the coilovers and vlsd are irrelevant.The best thing to do is get a fuel computer (safc2 is the cheapest) and get it TUNED. Without tuning you could probably boost up to 12lbs and still be safe. With tuning the t2small will max out at 14-15lbs iirc. Other people may be more aggressive, but I think that opinion will change once they blow their motors and realize how much it costs to fix.

sr20drft · 04-23-2005, 03:46 AM

thanks guys, will tune to 12psi until the safc2 goes in

btw..... if i was to beat a porsche, does he suck at driving or wtf?

s14sILV · 04-23-2005, 03:12 PM

he dosent suck..ur just better =)

khoadogg · 04-27-2005, 04:57 PM

depends on the porsche!

420sx · 04-27-2005, 05:07 PM

depends if there is a chick in the car.....

theicecreamdan · 04-28-2005, 01:52 AM

and how much she weighs

420sx · 04-28-2005, 11:01 AM

^ or how big the boobs are. and how short the skirt is

Dee240sx · 04-28-2005, 12:35 PM

^^ or if he was even racing you...

s14 blacktop · 04-28-2005, 01:34 PM

ok back on topic...

the * represents items that do not have anything to do with how much you should increase your boost....

Apexi Turbo Timer *
Apexi EL2 Black Face Boost Gauge *
Apexi N1 EXV Coilovers *
Apexi N1 Downpipe
Apexi N1 Evo 1 Piece Catback Exhaust
Apexi Super Intake Kit
Apexi Twin Chamber Blow Off Valve
Apexi AVC-R
JDM Viscous LSD & 5 Bolt Axles *
Kazama Testpipe (3")
R34 GTR Fuel Pump
Racing Battery *
NGK Iridium IX Sparkplugs (BKR6EIX-11)
Greddy VSPL FMIC Kit 24V

if I were you I would boost lower then 12lb. (this is the threshold of safe operation, without anything breaking) stay under 10lb. until you get bigger injectors. 370's run at 100% duty cycle at 12lb. which is not good for you injectors. (injector failure!!! would result if they were run at 100% all the time) the max I would run is 80% duty, which is at about 10lb.

Flybert · 04-28-2005, 06:51 PM

Quote:

Originally Posted by s14 blacktop

if I were you I would boost lower then 12lb. (this is the threshold of safe operation, without anything breaking) stay under 10lb. until you get bigger injectors. 370's run at 100% duty cycle at 12lb. which is not good for you injectors. (injector failure!!! would result if they were run at 100% all the time) the max I would run is 80% duty, which is at about 10lb.

That is absolutely not true. At 12psi on an SR powered by a t25, you are definitely not going to be running your 370cc injectors at max duty. You could possibly do it with a t28 but definitely not a t25.

420sx · 04-28-2005, 08:24 PM

^ correct. u can boost stock till 15 psi, and still be ok. now anything bigger will run out sooner. t28 at 12. t3 at 8.

sr20drft · 04-28-2005, 08:36 PM

ok an update........ that list i copied and pasted it and didnt bother to remove the items which would not affect how much more i could boost.

goost news, boosting 13psi and all is good

04-22-2005, 10:05 PM	#1
sr20drft Leaky Injector Join Date: Mar 2005 Location: In a house Posts: 61 Trader Rating: (0) Feedback Score: 0 reviews	Increasing boost.... couple questions Question foryou guys. I've been reading around for opinions on what to run on a stock t25 turbo, and everyones answers are different. I was wondering what you think I should run with these mods, and if you have any input on what settings to get it at with the AVC-R, thanks: Apexi Turbo Timer Apexi EL2 Black Face Boost Gauge Apexi N1 EXV Coilovers Apexi N1 Downpipe Apexi N1 Evo 1 Piece Catback Exhaust Apexi Super Intake Kit Apexi Twin Chamber Blow Off Valve Apexi AVC-R JDM Viscous LSD & 5 Bolt Axles Kazama Testpipe (3") R34 GTR Fuel Pump Racing Battery NGK Iridium IX Sparkplugs (BKR6EIX-11) Greddy VSPL FMIC Kit 24V

04-22-2005, 11:23 PM	#2
statik Zilvia FREAK! Join Date: Oct 2003 Location: Long Island, NY Age: 37 Posts: 1,358 Trader Rating: (0) Rides Gallery: statik Feedback Score: 0 reviews	you can safely run 15psi with that fuel pump/fmic, thats maxing the stock turbo __________________ 97 240sx esaarr \| Current Status: SOLD

04-27-2005, 04:57 PM	#6
khoadogg Nissanaholic! Join Date: Oct 2003 Location: San Jose, CA Age: 38 Posts: 2,423 Trader Rating: (11) Feedback Score: 11 reviews	depends on the porsche! __________________ AIM SoarinStrong[B]STRONG 6iX[B] RB single turbo ///Work AMKREAD 180sx

04-27-2005, 05:07 PM	#7
420sx Post Whore! Join Date: Jun 2004 Location: Texas Age: 38 Posts: 3,960 Trader Rating: (0) Rides Gallery: 420sx Feedback Score: 0 reviews	depends if there is a chick in the car..... __________________ hydropgrahics! ls1......

04-28-2005, 11:01 AM	#9
420sx Post Whore! Join Date: Jun 2004 Location: Texas Age: 38 Posts: 3,960 Trader Rating: (0) Rides Gallery: 420sx Feedback Score: 0 reviews	^ or how big the boobs are. and how short the skirt is __________________ hydropgrahics! ls1......

04-23-2005, 03:46 AM	#4
sr20drft Leaky Injector Join Date: Mar 2005 Location: In a house Posts: 61 Trader Rating: (0) Feedback Score: 0 reviews	thanks guys, will tune to 12psi until the safc2 goes in btw..... if i was to beat a porsche, does he suck at driving or wtf?

04-23-2005, 03:12 PM	#5
s14sILV Join Date: Feb 2005 Location: SF Posts: 28 Trader Rating: (0) Feedback Score: 0 reviews	he dosent suck..ur just better =)

04-28-2005, 12:35 PM	#10
Dee240sx Leaky Injector Join Date: Feb 2003 Location: North Jersey Posts: 55 Trader Rating: (0) Feedback Score: 0 reviews	^^ or if he was even racing you...

04-28-2005, 01:34 PM	#11
s14 blacktop Zilvia Member Join Date: Oct 2004 Location: down south, deep south Age: 41 Posts: 274 Trader Rating: (0) Rides Gallery: s14 blacktop Feedback Score: 0 reviews	ok back on topic... the * represents items that do not have anything to do with how much you should increase your boost.... Apexi Turbo Timer * Apexi EL2 Black Face Boost Gauge * Apexi N1 EXV Coilovers * Apexi N1 Downpipe Apexi N1 Evo 1 Piece Catback Exhaust Apexi Super Intake Kit Apexi Twin Chamber Blow Off Valve Apexi AVC-R JDM Viscous LSD & 5 Bolt Axles * Kazama Testpipe (3") R34 GTR Fuel Pump Racing Battery * NGK Iridium IX Sparkplugs (BKR6EIX-11) Greddy VSPL FMIC Kit 24V if I were you I would boost lower then 12lb. (this is the threshold of safe operation, without anything breaking) stay under 10lb. until you get bigger injectors. 370's run at 100% duty cycle at 12lb. which is not good for you injectors. (injector failure!!! would result if they were run at 100% all the time) the max I would run is 80% duty, which is at about 10lb. __________________ I'm here to inform not to conform...

04-28-2005, 08:24 PM	#13
420sx Post Whore! Join Date: Jun 2004 Location: Texas Age: 38 Posts: 3,960 Trader Rating: (0) Rides Gallery: 420sx Feedback Score: 0 reviews	^ correct. u can boost stock till 15 psi, and still be ok. now anything bigger will run out sooner. t28 at 12. t3 at 8. __________________ hydropgrahics! ls1......

04-28-2005, 08:36 PM	#14
sr20drft Leaky Injector Join Date: Mar 2005 Location: In a house Posts: 61 Trader Rating: (0) Feedback Score: 0 reviews	ok an update........ that list i copied and pasted it and didnt bother to remove the items which would not affect how much more i could boost. goost news, boosting 13psi and all is good

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