Fuel Pump Questions
07-12-11, 02:14 PM
#1
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Fuel Pump Questions
1) Is a Walbro plug and play or how much modifying does it need to fit and work?
2) Is the Walbro loud and annoying?
3) Are there any other pumps that will support a little boost and not be loud?
I'm planning on a nice little setup that won't be as big as some peoples by any means but I want to maintain the Luxury feel of the car and having a fuel pump sound like it came out of a 95 Suburban is not my idea of great.
The reason I ask is that my fuel pump just started to whine and it's on the way out I'm assuming so I may as well upgrade while I'm in there.
2) Is the Walbro loud and annoying?
3) Are there any other pumps that will support a little boost and not be loud?
I'm planning on a nice little setup that won't be as big as some peoples by any means but I want to maintain the Luxury feel of the car and having a fuel pump sound like it came out of a 95 Suburban is not my idea of great.
The reason I ask is that my fuel pump just started to whine and it's on the way out I'm assuming so I may as well upgrade while I'm in there.
07-12-11, 02:47 PM
#2
I would say go with a denso supra TT intank. Quiet and reliable. I'm not sure though if a separate fuel pump ecu is needed to properly run this pump. I was reading on the supraforums that the NA ecu guys have issues running this pump but it was unclear.
Regardless of the fuel pump you will want to rewire it with at least an 8 gauge wire from the battery to the fuel pump for consistent voltage.
https://www.clublexus.com/forums/per...tures-faq.html
From that thread:
Regardless of the fuel pump you will want to rewire it with at least an 8 gauge wire from the battery to the fuel pump for consistent voltage.
https://www.clublexus.com/forums/per...tures-faq.html
From that thread:
if you really want good voltage, this is the real way to do it... a very very common mod on the DSM's - the stock wiring wasn't enough for an aftermarket fuel pump to get the full voltage possible... run an 8 gauge wire from the battery terminal back to the fuel pump... install a relay using the green/red wire from the fuel pump ecu as the switch for the relay, and then use a short amount of the red/green wire coming from the fuel pump to go to the relay....
voltage drop over 20 feet of small gauge (whats it - 14?) wire drops voltage all the way back to the fuel pump...
voltage drop over 20 feet of small gauge (whats it - 14?) wire drops voltage all the way back to the fuel pump...
Last edited by HiPSI; 07-12-11 at 03:12 PM.
07-12-11, 03:57 PM
#4
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I'll test it out with stock fuel pump from the get go.
Fuel flow on a bone stock motor isn't a concern for me yet, but when the boost is added I'll bypass it.
Any links for a good price saved anywhere?
Fuel flow on a bone stock motor isn't a concern for me yet, but when the boost is added I'll bypass it.
Any links for a good price saved anywhere?
07-12-11, 03:59 PM
#5
Walbro 255 is plug and play as long as you run a gss342 and I have one in my sc which you can't hear at all and not to mention reliable.
Oh and the price is right for 87.00 shipped on e-bay just make sure you buy an actual walbro 255 and not the knock off which uses clever wording to make you think you are buying a real one.
My evo had a noisy one but really not bad so I would say out of the 12-15 walbro's I have over the years only 1 was loud and out of the 100's I have installed for customers we have never had any that were loud.
Oh and the price is right for 87.00 shipped on e-bay just make sure you buy an actual walbro 255 and not the knock off which uses clever wording to make you think you are buying a real one.
My evo had a noisy one but really not bad so I would say out of the 12-15 walbro's I have over the years only 1 was loud and out of the 100's I have installed for customers we have never had any that were loud.
07-12-11, 04:01 PM
#6
Walbro 255 is plug and play as long as you run a gss342 and I have one in my sc which you can't hear at all and not to mention reliable.
Oh and the price is right for 87.00 shipped on e-bay just make sure you buy an actual walbro 255 and not the knock off which uses clever wording to make you think you are buying a real one.
My evo had a noisy one but really not bad so I would say out of the 12-15 walbro's I have over the years only 1 was loud and out of the 100's I have installed for customers we have never had any that were loud.
Oh and the price is right for 87.00 shipped on e-bay just make sure you buy an actual walbro 255 and not the knock off which uses clever wording to make you think you are buying a real one.
My evo had a noisy one but really not bad so I would say out of the 12-15 walbro's I have over the years only 1 was loud and out of the 100's I have installed for customers we have never had any that were loud.
Last edited by HiPSI; 07-12-11 at 04:11 PM.
07-12-11, 05:49 PM
#7
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No 255 is just loud regardless of what kind of wire you use I have a walbro for about 3 years mayb we 9k miles at the most its loud as hell trust me I dont have a full exhaust only dp but I can hear the pump running seriouly. Denso gets my vote
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07-12-11, 07:05 PM
#9
Also look in to the full blown 342 lph pump which out flows the denso and is cheaper.
Aeromotive makes one as well and both out flow the denso and are cheaper.
Walbro 255lph gss 342 has made 600whp but will make 500whp reliably which end hp goal should be taken in to consideration as well.
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