idle and walbro question - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Milly · 08-05-2012, 07:45 PM

Alright so My sr20det is finally running right, not misfiring or anything like that but my idle is a little bit high (shop had to weld a crack in my intake manifold and they "checked timing"...i guess messed with idle to

Anyways it idles right around 1600 rpm's.... Can i just turn down the idle screw or will i need to re-set the timing when i do that?

Also, i ordered a walbro 255, can i install it or do i have to worry about a tune for the larger pump?

Thanks!

Sileighty_85 · 08-05-2012, 08:25 PM

you can adjust the IACV without messing with the timing

No retune needed for bigger fuel pump.

Milly · 08-05-2012, 08:32 PM

Quote:

Originally Posted by Sileighty_85

you can adjust the IACV without messing with the timing

No retune needed for bigger fuel pump.

Awesome, thanks a ton!

Dorifto Machine · 08-06-2012, 02:02 PM

Quote:

Originally Posted by Milly

Also, i ordered a walbro 255, can i install it or do i have to worry about a tune for the larger pump?

Thanks!

Are you running stock Fuel Pressure Regulator or aftermarket Fuel Pressure Regulator?

booey13 · 08-06-2012, 03:53 PM

^What he said. Good idea to get an adjustable fpr with a walbro

Milly · 08-06-2012, 09:46 PM

its stock....i put it in today before reading.

how much is a decent regulator?

booey13 · 08-06-2012, 10:00 PM

About a hundred bucks for a decent one. A lot of guys have used stock fpr's with Walbros but I wouldn't.

Sileighty_85 · 08-07-2012, 05:45 AM

a FPR is not really needed, good to have for tunning purposes.

Wont hurt anything.

Kingtal0n · 08-07-2012, 11:25 PM

the oem sr20det regulator is good until around 330rwhp- then you are playing with fire.

cheapest best is nismo, around $80~

StepN2Boost · 08-14-2012, 05:27 PM

If you do buy an Fpr, I wouldn't recommend getting a rep. Buy authentic, I made a rookie mistake and purchased a knockoff aeromotive when I made my turbo/fuel upgrade and was having fuel drop problems. Swapped with authentic Aeromotive and problem solved.

project-c2 · 08-14-2012, 08:09 PM

Did they take off the intake mani to weld? Air leak and they raised idle to hide it. IDK. Sounds fishy that it idles so high then they set timing. Should reshoot timing after lowering idle rpm.

I run a Walbro, didn't change anything. I use a Tomei fpr with Tomei adapter.

08-05-2012, 07:45 PM	#1
Milly Leaky Injector Join Date: Mar 2012 Location: Charleston sc Posts: 112 Trader Rating: (0) Feedback Score: 0 reviews	idle and walbro question Alright so My sr20det is finally running right, not misfiring or anything like that but my idle is a little bit high (shop had to weld a crack in my intake manifold and they "checked timing"...i guess messed with idle to Anyways it idles right around 1600 rpm's.... Can i just turn down the idle screw or will i need to re-set the timing when i do that? Also, i ordered a walbro 255, can i install it or do i have to worry about a tune for the larger pump? Thanks!

08-05-2012, 08:25 PM	#2
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	you can adjust the IACV without messing with the timing No retune needed for bigger fuel pump. __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

08-06-2012, 03:53 PM	#5
booey13 Zilvia FREAK! Join Date: Sep 2009 Location: Midwest Age: 31 Posts: 1,401 Trader Rating: (91) Feedback Score: 91 reviews	^What he said. Good idea to get an adjustable fpr with a walbro __________________ www.monkeyboysyo.blogspot.com

08-06-2012, 10:00 PM	#7
booey13 Zilvia FREAK! Join Date: Sep 2009 Location: Midwest Age: 31 Posts: 1,401 Trader Rating: (91) Feedback Score: 91 reviews	About a hundred bucks for a decent one. A lot of guys have used stock fpr's with Walbros but I wouldn't. __________________ www.monkeyboysyo.blogspot.com

08-07-2012, 05:45 AM	#8
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	a FPR is not really needed, good to have for tunning purposes. Wont hurt anything. __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

08-06-2012, 09:46 PM	#6
Milly Leaky Injector Join Date: Mar 2012 Location: Charleston sc Posts: 112 Trader Rating: (0) Feedback Score: 0 reviews	its stock....i put it in today before reading. how much is a decent regulator?

08-07-2012, 11:25 PM	#9
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 38 Posts: 4,649 Trader Rating: (17) Feedback Score: 17 reviews	the oem sr20det regulator is good until around 330rwhp- then you are playing with fire. cheapest best is nismo, around $80~

08-14-2012, 05:27 PM	#10
StepN2Boost Leaky Injector Join Date: Jan 2012 Location: Estero, Fl Age: 33 Posts: 62 Trader Rating: (0) Feedback Score: 0 reviews	If you do buy an Fpr, I wouldn't recommend getting a rep. Buy authentic, I made a rookie mistake and purchased a knockoff aeromotive when I made my turbo/fuel upgrade and was having fuel drop problems. Swapped with authentic Aeromotive and problem solved.

08-14-2012, 08:09 PM	#11
project-c2 Leaky Injector Join Date: Jan 2012 Location: Honolulu, HI Age: 39 Posts: 76 Trader Rating: (4) Feedback Score: 4 reviews	Did they take off the intake mani to weld? Air leak and they raised idle to hide it. IDK. Sounds fishy that it idles so high then they set timing. Should reshoot timing after lowering idle rpm. I run a Walbro, didn't change anything. I use a Tomei fpr with Tomei adapter.

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