This is a discussion on Shot Size within the Nitrous forums, part of the LSx Technical Help Section category; Was wondering if i can run a 150hp wet shot safely with out upgrading the fuel pump? Thanks for any ...
09-26-2005, 05:18 AM #1Richard Nock, Jr.Guest
Was wondering if i can run a 150hp wet shot safely with out upgrading the fuel pump?
Thanks for any help that can be offered.
Last edited by Richard Nock, Jr.; 09-26-2005 at 10:13 AM.
09-27-2005, 03:30 AM #2XTrooperGuest
The answer is...............
maybe. I've seen stock fuel pumps handle a 150 shot with no problem and other "lazy" pumps fall on their face with a 100 shot including my own Corvette's which come with a normally very capable Walbro pump from the factory. Go figure.
Anyway, the bottom line is, your pump will probably be able to handle a 150 shot, but the only way to know for sure is to try it while monitoring your fuel pressure and/or your A/F ratio. If you see a big dip in your fuel pressure and/or your A/F going lean, you'll know you need to upgrade.
Personally, I'd just go ahead and upgrade my fuel pump if I were you. They really aren't all that expensive and you'll have one less thing to worry about.
09-27-2005, 05:46 AM #3Richard Nock, Jr.Guest
Thank you for the info, goin to try the shot this weekend, and will watch the fuel pressure and the A/F ratio.
09-27-2005, 05:54 AM #4XTrooperGuest
My pleasure. Good luck!
09-27-2005, 06:57 AM #5
- Join Date
- Aug 1999
- San Diego, Ca
- 383 Procharged & N20 Vert
XTrooper is correct.
I was ran a 150 for 2 years on the stock pump.Black 1999 Blown Convertible A4
Forged 383, ATI D-1SC
NX MAF Kit | 222/226 .585 115
AS Stage II 6.0L FI Heads
Moser 9" | 3.70 | Wavetrac | 35 Spline | Vigilante 3600
548.0 RWHP - 563.8 RWTQ - 10# - D1
666.0 RWHP - 734.2 RWTQ - 125 Shot - P1
Black 2009 Escalade Hybrid 4WD
Black 2008 GMC Yukon Hybrid 4WD (Totaled)
Black 2013 Chevy Volt (Gone)
09-27-2005, 07:06 AM #6
- Join Date
- Aug 2005
- Texas Department of Corrections
- Retired Outlaw Sum Bitch
Watch your FP for sure..go lean and kaboom...150 shot you are probably safe as Xtrooper pointed out...but a Walbro (or other brand) fuel pump is no big deal and not that expensive at all.....
Last edited by Sarge; 09-27-2005 at 06:10 PM.This is my signature. It is mine. Nobody else has one like it.
09-27-2005, 04:33 PM #7RED98WS6GuestOriginally Posted by Richard Nock, Jr.
I depends on what else you got goin' on in that motor. I've read where the stock pump is only good to about 450 hp. My car seemed to verify this because I was running about 375 rwhp (at the time) and with 150 shot, I was only able to get 450 rwhp. All I did was add a Holley inline fuel pump (same as Walbro) and my rwhp jumped up to 527 rwhp.
Nitrous likes high pressure/high volume fuel pumps.....
09-28-2005, 08:34 AM #8
- Join Date
- Aug 2005
- Warminster, PA
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