foxySS Posted January 22, 2006 Report Share Posted January 22, 2006 Do I need a new fuel pump if I upgrade to 44lb injectors? I have a whipple/Magnaflow/CAI/ and pcmforless coming soon. Any info would be great! Link to comment Share on other sites More sharing options...
cadowns Posted January 22, 2006 Report Share Posted January 22, 2006 What model of truck and motor do you have? SS LQ9 ? What year? CD Link to comment Share on other sites More sharing options...
foxySS Posted January 22, 2006 Author Report Share Posted January 22, 2006 What model of truck and motor do you have? SS LQ9 ? What year? CD <{POST_SNAPBACK}> Sorry, just upgraded my Sig Link to comment Share on other sites More sharing options...
BenKey Posted January 22, 2006 Report Share Posted January 22, 2006 All SSs have the LQ9. Yes, you should plan on putting a higher volume pump in. Not just because of the 44lb injectors, but for the s-chgr. Link to comment Share on other sites More sharing options...
foxySS Posted January 22, 2006 Author Report Share Posted January 22, 2006 All SSs have the LQ9. Yes, you should plan on putting a higher volume pump in. Not just because of the 44lb injectors, but for the s-chgr. <{POST_SNAPBACK}> One thing I noticed while ordering my new PCM tonight though. It said (PCMforLess ordering page) do not alter or change factory fuel pump. It would make sense to change it but I wonder if I could get away without it? It's weird too- You would think that a GM dealership installing the SC (to keep the factory warranty) would have done that too. Link to comment Share on other sites More sharing options...
mwalls54 Posted January 23, 2006 Report Share Posted January 23, 2006 All SSs have the LQ9. Yes, you should plan on putting a higher volume pump in. Not just because of the 44lb injectors, but for the s-chgr. <{POST_SNAPBACK}> One thing I noticed while ordering my new PCM tonight though. It said (PCMforLess ordering page) do not alter or change factory fuel pump. It would make sense to change it but I wonder if I could get away without it? It's weird too- You would think that a GM dealership installing the SC (to keep the factory warranty) would have done that too. <{POST_SNAPBACK}> You should give Brian a call about the pcm. As for up grading the fuel pump you will need to at least put a inline pump on. You will be starving the engine with a stock pump. Link to comment Share on other sites More sharing options...
Justin Lamanna Posted January 23, 2006 Report Share Posted January 23, 2006 PCMforless does it's tuning based on the stock fuel pump or if its a radix application based on the added intank pump. Like BenKey said, add one and let Brain know which it is and the lbs it's putting out. Make sure to get one the does 55lbs+. Link to comment Share on other sites More sharing options...
zippy Posted January 23, 2006 Report Share Posted January 23, 2006 if you're running an 03' i recomend the inline helper pump. Link to comment Share on other sites More sharing options...
SS_bnoon_SS Posted January 23, 2006 Report Share Posted January 23, 2006 if you're running an 03' i recomend the inline helper pump. <{POST_SNAPBACK}> Ditto. The '03 has a return fuel system and it doesn't really matter how many pumps you have on this system so long as it can keep up with the injectors at WOT. Link to comment Share on other sites More sharing options...
foxySS Posted January 23, 2006 Author Report Share Posted January 23, 2006 if you're running an 03' i recomend the inline helper pump. <{POST_SNAPBACK}> Any recommendation on a specific model or brand? Link to comment Share on other sites More sharing options...
mwalls54 Posted January 23, 2006 Report Share Posted January 23, 2006 I would check on one like they sell with the Radix. Link to comment Share on other sites More sharing options...
Justin Lamanna Posted January 23, 2006 Report Share Posted January 23, 2006 I would check on one like they sell with the Radix. <{POST_SNAPBACK}> It's made by walbro Link to comment Share on other sites More sharing options...
foxySS Posted January 24, 2006 Author Report Share Posted January 24, 2006 Thanks, I'll check it out. Link to comment Share on other sites More sharing options...
foxySS Posted January 24, 2006 Author Report Share Posted January 24, 2006 Is it the Walbro 255? Seems to be the popular choice on LS based vehicles. Anyone know the part # I need? Link to comment Share on other sites More sharing options...
PladdPezzPunk Posted January 24, 2006 Report Share Posted January 24, 2006 i would also consider aeromotive. I've had real good luck with these pumps. they are a little pricy but worth the cash IMO. Link to comment Share on other sites More sharing options...
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