Dyno Info: Before and After Lambda and power graphs Fuel Pump Rewire.

[NachO_SRT]

The Before Runs are 001(Stock Fuel Pump) and 002(255LPH Stock Wires), the after run is 004(255 Rewired). The only change made was the rewire, all runs performed on the same day.


Lambda first:


Now power, Same runs.




Please keep in mind, I did NOT change any boost or timing settings, this is pure apples to apples. Thought this might be helpful for those guys that want to KNOW what the rewire will do for you.

N-Joy

Oh yeah, here she is on E85 with the stocker on DIEFUCKER! (27.3 PSI)



NachO

[slvr_skittle]

so you lost power and torque after rewire???

[amdguy]

Quote: Originally Posted by slvr_skittle

so you lost power and torque after rewire???

because it was more rich...

[TheBugBox]

Now where's the run with the AFR corrected?
We want to see the gains, heh.

[NachO_SRT]

Quote: Originally Posted by TheBugBox

Now where's the run with the AFR corrected?
We want to see the gains, heh.

I have those results:



This was Runfile 011 - 7 runs after the baseline 004 run posted earlier in this thread.


NachO

[TheBugBox]

Wow, I laid those over each other, and that's some impressive gains. From 10-60hp in the 2.3k -5k rpm range.

[btree211]

very nice

[duster360]

Quote: Originally Posted by NachO_SRT

Please keep in mind, I did NOT change any boost or timing settings, this is pure apples to apples.
NachO

Did you happen to record the boost readings from each run?

[NachO_SRT]

Quote: Originally Posted by duster360

Did you happen to record the boost readings from each run?

I have those, however they are in my data log archive, I'll have to dig them up, my upkeep and naming convention SUCK. sorry.

I'll see if I cant find the log.


NachO

[duster360]

Quote: Originally Posted by NachO_SRT

I have those, however they are in my data log archive, I'll have to dig them up, my upkeep and naming convention SUCK. sorry.

I'll see if I cant find the log.


NachO

The AEM log files will work

[NachO_SRT]

Quote: Originally Posted by TheBugBox

Wow, I laid those over each other, and that's some impressive gains. From 10-60hp in the 2.3k -5k rpm range.

I was impressed to say the least. I've got a dead nuts Tuner, he's used to EVO's and Supra's, and is try'n to get me to bite on a PRO-efi PRO-128 set-up. I'm tempted.

I dunno if anyone noticed, but the E-85 graph is "smoothing 0" Tell me thats not DEAD nuts tuned.


You should drive it, I just got back from Heartland Park for a Touring Club day and it F'n ruled. Topping 4th on the front strip was insane. I turned -6, -8, and -10 second laps today over my old best lap. (shhh we're not supposed to be timing on touring club days)

It's on point. for sure.

I've got a few more of these Dyno graph info threads to post up as I organize them.



NachO

[Sunofwolf]

That didn't really prove that lower Hp with 255 needs a rewire, The walbro flows about 40% more fuel with the power that it is given over stock. You run more fuel into the engine change the boost and you make more power adj the fuel to around 12 a/f and your max ing out the engine. I have only a few mods larger 62 trottle body,680 injectors adding a 255 would give me 40% more fuel over stock without a rewire with a rewire the walbro would flow maybe another 15%-I doubt i need that much fuel ,so it just isn't needed. Add bigger injectors like a 750 would be a different story-the extra fuel might be needed,might not either. I noticed a very good mod might be the s3 reg/filter. I will end up doing a rewire,but right now the car isn't getting enogh fuel at even idle, so i am putting in a New reg/filter and 255 on wedsday that should solve the fuel problem I have now, I hope, but maybe its really the reg/filter thats the problem not the fuel pump at all -even the stock on could be enogh. But your info does make it into the fact file because you have some facts in ther-not enogh though-you put the walbro in without testing it by its self with out a rewire!

[04blusrt_4]

Quote: Originally Posted by Sunofwolf

That didn't really prove that lower Hp with 255 needs a rewire, The walbro flows about 40% more fuel with the power that it is given over stock. You run more fuel into the engine change the boost and you make more power adj the fuel to around 12 a/f and your max ing out the engine. I have only a few mods larger 62 trottle body,680 injectors adding a 255 would give me 40% more fuel over stock without a rewire with a rewire the walbro would flow maybe another 15%-I doubt i need that much fuel ,so it just isn't needed. Add bigger injectors like a 750 would be a different story-the extra fuel might be needed,might not either. I noticed a very good mod might be the s3 reg/filter. I will end up doing a rewire,but right now the car isn't getting enogh fuel at even idle, so i am putting in a New reg/filter and 255 on wedsday that should solve the fuel problem I have now, I hope, but maybe its really the reg/filter thats the problem not the fuel pump at all -even the stock on could be enogh. But your info does make it into the fact file because you have some facts in ther-not enogh though-you put the walbro in without testing it by its self with out a rewire!

255 was run without the rewire

[orator3]

Quote: Originally Posted by Sunofwolf

That didn't really prove that lower Hp with 255 needs a rewire, The walbro flows about 40% more fuel with the power that it is given over stock. You run more fuel into the engine change the boost and you make more power adj the fuel to around 12 a/f and your max ing out the engine. I have only a few mods larger 62 trottle body,680 injectors adding a 255 would give me 40% more fuel over stock without a rewire with a rewire the walbro would flow maybe another 15%-I doubt i need that much fuel ,so it just isn't needed. Add bigger injectors like a 750 would be a different story-the extra fuel might be needed,might not either. I noticed a very good mod might be the s3 reg/filter. I will end up doing a rewire,but right now the car isn't getting enogh fuel at even idle, so i am putting in a New reg/filter and 255 on wedsday that should solve the fuel problem I have now, I hope, but maybe its really the reg/filter thats the problem not the fuel pump at all -even the stock on could be enogh. But your info does make it into the fact file because you have some facts in ther-not enogh though-you put the walbro in without testing it by its self with out a rewire!

The only thing i have learned from your thread and this one is that the rewire gives you more fuel with the 255, is more efficient, and your car is less likely to catch on fire. If i use this fuel pump i will for certian upgrade the wireing. Thank you for helping me make a wise decision.

[Sunofwolf]

I talked to Carl a Walbro engieer at 987-673-7727-because those graphs don't really say much except the walbro was running with a little more power sure it's going to pump a bit more unused gas-he said the pump works on as little as 9v-14volts and at 10.5v the walbro is putting out enogh gas for a 375HP car. the stock wiring according to duster 360 puts out 12.5v enogh for a 450HP engine at idle and almost 13v at 5000rpm-enogh for a 485HP engine. Now you only need less than 10v to run that 290HP engine fuLL of fuel with the stock wiring-the rewire is not needed at all in his car no matter how much you think it does!