A double pumper isnt a 1000hp setup.

 

bingo!

 

I didn't come anywhere near running out of fuel trapping 135mph 880's and single.

so long as you don't try to tune on e85 or q16 you'll be fine.

 

Just curious, if you want to de-tune your car for some reason, I assume for increased reliability, why not simply detune it to 500whp and stay with E85?

That are a number of valid reasons for running E85 other than maximum HP:
1. E85 is a renewable resource
2. Reduce dependence on foreign oil, or any oil for that matter
3. Lower EGT's
4. Higher torque to HP ratio than pump gas
5. Could run two maps: E85 and pump
6. Can run more timing than pump

Anyway, just food for thought...

 

You will be fine with 1 pump

 

heres a logical statement

lol Evodynamics would hate me anyways if i tried to get rid of my setup, they just put it in . we'll see what happens, he gets back from out of town soon and well talk then.

 

with a single walbro and PTE 880's I was at 117% IDC showing ~ 500awhp in DLL, going to PTE 1000cc that dropped to 107% IIRC. Going to twin walbros that dropped to ~80% so clearly I had a fuel pressure problem. This was all on the HTA 35R with stock heads and HKS 280 cams. Later I upgraded to the Buschur 2.0 + stage 3 head + BF272 cams and DLL showed ~600awhp, the IDC shot up to 92% and the car went 135 on 93 octane like that. This is a full weight car by the way so if you're going to compare trap speeds you have to keep that in mind.

 

This is good information. I currently have 880cc injectors but I think I am going to do the upgrade to 1050cc and see where that takes me!

 

Why not use a bosch 044, I think, fuel pump inline rather than twin setup and keep the single?

 

Like you said you had a pressure issue, not flow. I think with a FPR you would not have had that issue. By adding a second pump you simply Over ran the stock regulator.

What does you car weigh in at? Mine was about 3200 when I trapped 142. Thats full weight minus rear seats and one front seat. 05 SSL is heavy!


Thats also without me in it. I weight about 250 lbs..


-Em

 

Edit *-ment to quote mellon not stm-

i trapped 131mph in a almost full weight car. which is what you were trapping when you were making "~600awhp dll"

And i never maxed out the 880's afr's low 11s all the way to 8200.

 

put me in the line for the dbl pumper and the adj. fpr if you decide to sell. also, i have an almost new walbro you can have cheap if you need one.

 

im running precision 880's on a single walboro, my IDC's are at 81%, on 100 octane though

 

higher octane allows for leaner AFR, that can also save on the IDC.

Emery my car should be very close to stock weight, the only weight reduction is the mini battery, missing front crash bar, spare tire and jack.

 

I trapped 135, not 131 and on 93 octane, not race gas