Is Walbro 255 enough
#20
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#21
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I'm running a BBK with FIC 1100 high impedance scaled to 680 mated to a punched walbro 255.
I was doing some road tuning tonight and believe I'm encountering this very thing. Adding fuel via my fuel table, basically richening it up from 10.0 to 9.0 had zero effect. See image below.
Other than a failing wideband sensor or leaky exhaust (doubtful) is there anything else that can throw the AFR out of whack?
Can scaling or latency have this kind of impact? I stopped tuning the AFR when I saw the upper powerband so this isn't "tuned" I know 12.5:1 is stil safe on E85 but don't feel comforatable running it at its limit. THoughts?
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Jeff_Jeske (Sep 11, 2016)
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Jeff_Jeske (Sep 11, 2016)
#25
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Gentleman, thanks for the replies! I can see my IDC go up but it has no impact on AFR. I'm an old school DSM guy so I try not to go above 80% IDC.
I hate being in this position because if I do the fuel pump I'll need to do an FPR and then I might as well swap out fuel lines and such. I absolutely hate changing fuel lines because of the added risk of leaking and fire. This might end up being a winter project.
I see alot of people saying simply swapping out the feed line to a -6an line will be plenty for 500whp but as mentioned above that makes me nervous.
I would guess there are tons more people just like me sitting at this HP level and running out of pump. I wish there was an easy fix.
Bryan ... its been a minute ... but I'm still abusing my nine! I made some career changes that required me to move and invest a crap-load more time into professional development but I'm getting back into my normal rhythm again.
I hate being in this position because if I do the fuel pump I'll need to do an FPR and then I might as well swap out fuel lines and such. I absolutely hate changing fuel lines because of the added risk of leaking and fire. This might end up being a winter project.
I see alot of people saying simply swapping out the feed line to a -6an line will be plenty for 500whp but as mentioned above that makes me nervous.
I would guess there are tons more people just like me sitting at this HP level and running out of pump. I wish there was an easy fix.
Bryan ... its been a minute ... but I'm still abusing my nine! I made some career changes that required me to move and invest a crap-load more time into professional development but I'm getting back into my normal rhythm again.
#26
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Gentleman, thanks for the replies! I can see my IDC go up but it has no impact on AFR. I'm an old school DSM guy so I try not to go above 80% IDC.
I hate being in this position because if I do the fuel pump I'll need to do an FPR and then I might as well swap out fuel lines and such. I absolutely hate changing fuel lines because of the added risk of leaking and fire. This might end up being a winter project.
I see alot of people saying simply swapping out the feed line to a -6an line will be plenty for 500whp but as mentioned above that makes me nervous.
I would guess there are tons more people just like me sitting at this HP level and running out of pump. I wish there was an easy fix.
I hate being in this position because if I do the fuel pump I'll need to do an FPR and then I might as well swap out fuel lines and such. I absolutely hate changing fuel lines because of the added risk of leaking and fire. This might end up being a winter project.
I see alot of people saying simply swapping out the feed line to a -6an line will be plenty for 500whp but as mentioned above that makes me nervous.
I would guess there are tons more people just like me sitting at this HP level and running out of pump. I wish there was an easy fix.
I don't need more power, to be honest, so it's really not worth it for me. It's tempting, until I start the to-do list and add up the bill LOL.
Gary and I decided we'd tune the car to what it will do and go with that.
Also, I'm with you: i don't like over 80% IDCs. Nooooo way. I don't really like the way the car idles and drives on pump, though....
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Jeff_Jeske (Sep 11, 2016)
#27
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Gentleman, thanks for the replies! I can see my IDC go up but it has no impact on AFR. I'm an old school DSM guy so I try not to go above 80% IDC.
I hate being in this position because if I do the fuel pump I'll need to do an FPR and then I might as well swap out fuel lines and such. I absolutely hate changing fuel lines because of the added risk of leaking and fire. This might end up being a winter project.
I see alot of people saying simply swapping out the feed line to a -6an line will be plenty for 500whp but as mentioned above that makes me nervous.
I would guess there are tons more people just like me sitting at this HP level and running out of pump. I wish there was an easy fix.
Bryan ... its been a minute ... but I'm still abusing my nine! I made some career changes that required me to move and invest a crap-load more time into professional development but I'm getting back into my normal rhythm again.
I hate being in this position because if I do the fuel pump I'll need to do an FPR and then I might as well swap out fuel lines and such. I absolutely hate changing fuel lines because of the added risk of leaking and fire. This might end up being a winter project.
I see alot of people saying simply swapping out the feed line to a -6an line will be plenty for 500whp but as mentioned above that makes me nervous.
I would guess there are tons more people just like me sitting at this HP level and running out of pump. I wish there was an easy fix.
Bryan ... its been a minute ... but I'm still abusing my nine! I made some career changes that required me to move and invest a crap-load more time into professional development but I'm getting back into my normal rhythm again.
https://www.evolutionm.net/forums/ev...6-testing.html
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Jeff_Jeske (Sep 11, 2016)
#28
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I'm pretty darn close to 500whp. I made 440 on a mustang dyno, using a 255 and ID 1300's, fuel is never a problem. Usually around 10.9 Wot, which is perfect imo.
Wired right to stock fuel pump wires, never had an issue with it
Wired right to stock fuel pump wires, never had an issue with it
#29
Evolving Member
Walbro F90000274 E85 450lph Fuel Pump (not the F90000264) is the best pump on the market for under $200! Ive ran the 255, and also the DW300 which was absolute Garbage(all DW products are IMO) and nothing even comes close to the Walbro 450! They arent as loud as the DW300, and Radium Engineering makes some great compatible parts for it.
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