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Old 01-26-2004, 01:28 PM   #1
wagon-wrx
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Default Any issues with stock turbo/injectors with Walbro pump?

Hay all, I just wantted to ask if any one would think there would be any problems with doing the fuel pump first and hen doing injectors at a latter date? Working up to a VF34. I have Samcos, drop-in filter, up/down pipe, Cobb st2.

As I understand with my set-up now I could be overwhelming my stock pump at higher RPMs. Any coments would be great.
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Old 01-26-2004, 01:48 PM   #2
Kha0S
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The upgraded fuel pump will work fine with no other modifications.

As long as you do pump before injectors, and injectors before turbo, you're fine.

/Andrew
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Old 01-26-2004, 04:20 PM   #3
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Quote:
Originally posted by Kha0S

As long as you do pump before injectors, and injectors before turbo, you're fine.
Cobb's VF3? setups are without fuel pump...so I did injectors before pump. But I probably will soon just for safety.
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Old 01-26-2004, 04:29 PM   #4
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Quote:
Originally posted by mexicanpizza
Cobb's VF3? setups are without fuel pump...so I did injectors before pump. But I probably will soon just for safety.
Yeah... injectors don't mean diddly if they don't have fuel to back it up

By the flip side of that coin... upgrading your fuel pump before your injectors is pretty meaningless too, from what I understand... stock fuel pump pushes fine to stock injectors.

Only really make sense to do both at once
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Old 01-26-2004, 04:51 PM   #5
Hit Man X
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Tossin in the larger F-pump isn't bad but just keeps the fuel flow there to the injectors. The stock injectors get taxed before the pump goes so, there's not a need to do one before the other really.
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Old 01-26-2004, 05:11 PM   #6
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Thanks for the replys, I did a search but could not find this exact question. I dont think I would want to do to much in one sitting, I think I can run the pump for a bit and make sure its working then do the injectors a week later make sure there working ETC...


I also am not sure if the Cobb st2 can is set to run STI pinks or if it will need a flash. I will have to give them a call or hit the Cobb forum.
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Old 01-26-2004, 06:29 PM   #7
Mildmanneredman
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I did mine a couple of weeks ago. Runs great, I even had mine IDC's drop a little.
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Old 01-26-2004, 08:45 PM   #8
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I'm running; VF34, walbropump, APS tmi, txs turbo-back, STOCK INJECTORS, and FPR MOD, UTEC in closed loop with stage four map. No knock,no issues, lots of power.
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Old 01-27-2004, 03:07 PM   #9
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