Do I need to run corvette filter/regulator
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Do I need to run corvette filter/regulator I am gonna run a walbro 255 with billet fuel rails and 50 lb injectors. I see some guys say run the corvette c5 filter/regulator do I need to run this. 2000 Pontiac trans am ls-1 stroked to 383 trickflow heads fast 102 intake and tb. Trying to make sure I get my fuel system done best way
I would say that it is not necessary to run the C5 filter/regulator just keep in mind the FPR is on the fuel pump assembly so if it goes out your pulling the pump to replace which I have yet to hear of one failing. If you're doing the trap door mod then it's not a problem to get to the pump at all.
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Why add the second regulator? I would say that it is not necessary to run the C5 filter/regulator just keep in mind the FPR is on the fuel pump assembly so if it goes out your pulling the pump to replace which I have yet to hear of one failing. If you're doing the trap door mod then it's not a problem to get to the pump at all.
You don't want to add another regualator so if you decide to run the C5 one then you have to remove the one from the pump assembly. I cannot remember why I decided to go with the C5 unit but it most likely had something to do with going to larger pumps. I had a Bosch 340LPH pump at that time and have since went to a Walbro 450LPH and it's holding up just fine. For a 255 pump the factory one will probably be just fine.
There are three things to pay attention to: Flow rate to engine, return flow rate to tank, and pressure regulation.
You'll get the flow rate to engine with both Camaro and Corvette filter. Testing by Lingenfelter shows both are same with excessive pressure drop beginning at 270 L/hr. If one is too small for your engine then they're both too small.
The stock Camaro setup also will have adequate flow rate back to tank with the 255 L/hr, no issues there. (If it doesn't then what happens is pressure goes high at low engine loads because the system can't return enough fuel back to tank to regulate.)
So the only thing left is whether the Corvette would help pressure regulation. My personal experience with high-speed data logging in my ECU is the Corvette is worse. And most brands are total junk and have to be avoided. Overall those Corvette filters are a real POS and very inconsistent.
I would keep it simple and stick with what you have. I think you'll be fine at 255 L/hr. If you find that you want improved pressure regulation then skip over the Corvette and go to a regulator at fuel rail with a full return system.
You'll get the flow rate to engine with both Camaro and Corvette filter. Testing by Lingenfelter shows both are same with excessive pressure drop beginning at 270 L/hr. If one is too small for your engine then they're both too small.
The stock Camaro setup also will have adequate flow rate back to tank with the 255 L/hr, no issues there. (If it doesn't then what happens is pressure goes high at low engine loads because the system can't return enough fuel back to tank to regulate.)
So the only thing left is whether the Corvette would help pressure regulation. My personal experience with high-speed data logging in my ECU is the Corvette is worse. And most brands are total junk and have to be avoided. Overall those Corvette filters are a real POS and very inconsistent.
I would keep it simple and stick with what you have. I think you'll be fine at 255 L/hr. If you find that you want improved pressure regulation then skip over the Corvette and go to a regulator at fuel rail with a full return system.
Last edited by QwkTrip; Mar 13, 2022 at 01:01 PM.
If you can monitor fuel pressure then what you'll notice with the stock regulator is that fuel pressure is offset from target but it will be consistent as long as you're not exceeding delivery flow rate of system. That offset are the losses between tank and fuel rail. Mine would drop 1 or 2 psi under full throttle and just stay there. You can tune around that because it's consistent. It's when things are inconsistent that things get so bad.
If the engine exceeds the pump or filter then you'll see pressure glide downward as engine goes up in RPM. If engine exceeds by a lot then there will be an instant drop of pressure at WOT and pressure will glide down from there.
If the engine exceeds the pump or filter then you'll see pressure glide downward as engine goes up in RPM. If engine exceeds by a lot then there will be an instant drop of pressure at WOT and pressure will glide down from there.
Last edited by QwkTrip; Mar 13, 2022 at 01:24 PM.
