My e85 tune; 370hp
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From: Burbank CA
Still no answer from the first page of posts on why he's maxing out 1000cc injectors (with a Walbro 255) on E85 using the stock turbo? That's where the flags were raised.
The other fueling issues I was referring to was a buddy who went in for a supercharged VQ motor and ran out of fuel, so he ended up with grossly over-sized injectors based on Church's recommendation, knowing full well that it was using piggy-back fuel control so the bigger the injectors, the worse the idle. That has nothing to do with these forums so that's all I'll say about that and yes we've already spoken on the phone about that issue.
I'm going to switch to E85 on stock turbo soon, so hearing that 1000cc injectors for some reason aren't cutting it with you guys but others are saying 1000cc injectors are hitting 80% IDC on stock turbo/E85 and 97% IDC on a red/E85 makes me wonder why there's such a difference.
DW 1000cc's aren't going to be available for who knows how long, so I might end up with FIC 1100cc or go with the DW 1500cc.
So any update on why he was at 97% or 100% IDC using stock turbo on E85 with the 255lph pump and DW 1000cc injectors?
The other fueling issues I was referring to was a buddy who went in for a supercharged VQ motor and ran out of fuel, so he ended up with grossly over-sized injectors based on Church's recommendation, knowing full well that it was using piggy-back fuel control so the bigger the injectors, the worse the idle. That has nothing to do with these forums so that's all I'll say about that and yes we've already spoken on the phone about that issue.
I'm going to switch to E85 on stock turbo soon, so hearing that 1000cc injectors for some reason aren't cutting it with you guys but others are saying 1000cc injectors are hitting 80% IDC on stock turbo/E85 and 97% IDC on a red/E85 makes me wonder why there's such a difference.
DW 1000cc's aren't going to be available for who knows how long, so I might end up with FIC 1100cc or go with the DW 1500cc.
So any update on why he was at 97% or 100% IDC using stock turbo on E85 with the 255lph pump and DW 1000cc injectors?
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I went to Fontana Yesterday and got one clean run (I arrived late); 12.39@112 with a 1.89 60', I had been getting consistent 1.75 60' times at Irwindale since changing out the Trans fluid for aftermarket stuff.
This is most fun to drive on a daily basis car I have owned (I have owned many) and at the same time it is the the most civilized, my two roadsters are collecting dust!
Last edited by kmart888; Apr 4, 2010 at 11:28 PM.
I thought I made that clear, the 100% duty cycle was only for about 1 millisecond between WOT shifts with the SST, the log showed it peaked at 93% where it mattered. I was fooled by the peak and hold reading from the Cobb AP display. Yesterday it peaked at 88% duty cycle but it was about 20* warmer if that matters.
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Here's why I even brought it up in the first place...
1. I'm looking to have a similar setup and I'm concerned with 90%+ IDC
2. I don't understand why your IDC is so high
3. I only know what I read about tuning, so I was hoping others can shed some light on this specific case
1. I'm looking to have a similar setup and I'm concerned with 90%+ IDC
2. I don't understand why your IDC is so high
3. I only know what I read about tuning, so I was hoping others can shed some light on this specific case
He hasn't confirmed what brand the injectors are. There is at least one brand that sells a 990 so it's possible these are not DW. The DW1000's that I have came with flow sheets that stated 1030-1040 as the actual so they often flow a little more than their rating to begin with.
Most of the Evo 8/9 guys run 1200's on the stock turbo. We just haven't had enough options thus far.
Most of the Evo 8/9 guys run 1200's on the stock turbo. We just haven't had enough options thus far.
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From: Burbank CA
Just get the DW1500's, the driveability will be the same if you are worried about going to be big, assuming you are on e85 though.
With the high impedance injectors on the X we don't have the same issues the 8/9's did with going to 1000cc plus's (at first anyway).
Unless you are really concerned with price, just get the DW1500's and call it a day.
With the high impedance injectors on the X we don't have the same issues the 8/9's did with going to 1000cc plus's (at first anyway).
Unless you are really concerned with price, just get the DW1500's and call it a day.
You might be able to get them to idle right, but it would be pushing it.
That gets to be more of a gray area. We'll have to see how well the DW1500's behave with duty cycles below 50%. Normally you have trouble getting a smooth idle because the injector can't dump a small enough amount of fuel for the idle.
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i really wouldnt know as i didnt tune the car...
but i also think is odd that the injectors are up there in the duty cycle based on his fuel system setup.... there a few variables to go thru to pinpoint it thou
Your friends first problem was getting a piggy back and running it on his car... the answer is Uprev...
would u want to run lean or have enough fuel.... but again all this can be avoided with proper engine management for the platform...
you posting this in this thread is dumb... next.
review my previous post and read in between the lines, you can see my setup vs his, and my duty vs his, and see something is weird
but remember in the end, the tuner gets blamed for everything and becomes a object lesson. no pun intended.
but i also think is odd that the injectors are up there in the duty cycle based on his fuel system setup.... there a few variables to go thru to pinpoint it thou
Your friends first problem was getting a piggy back and running it on his car... the answer is Uprev...
would u want to run lean or have enough fuel.... but again all this can be avoided with proper engine management for the platform...
you posting this in this thread is dumb... next.
review my previous post and read in between the lines, you can see my setup vs his, and my duty vs his, and see something is weird
but remember in the end, the tuner gets blamed for everything and becomes a object lesson. no pun intended.
Still no answer from the first page of posts on why he's maxing out 1000cc injectors (with a Walbro 255) on E85 using the stock turbo? That's where the flags were raised.
The other fueling issues I was referring to was a buddy who went in for a supercharged VQ motor and ran out of fuel, so he ended up with grossly over-sized injectors based on Church's recommendation, knowing full well that it was using piggy-back fuel control so the bigger the injectors, the worse the idle. That has nothing to do with these forums so that's all I'll say about that and yes we've already spoken on the phone about that issue.
I'm going to switch to E85 on stock turbo soon, so hearing that 1000cc injectors for some reason aren't cutting it with you guys but others are saying 1000cc injectors are hitting 80% IDC on stock turbo/E85 and 97% IDC on a red/E85 makes me wonder why there's such a difference.
DW 1000cc's aren't going to be available for who knows how long, so I might end up with FIC 1100cc or go with the DW 1500cc.
So any update on why he was at 97% or 100% IDC using stock turbo on E85 with the 255lph pump and DW 1000cc injectors?
The other fueling issues I was referring to was a buddy who went in for a supercharged VQ motor and ran out of fuel, so he ended up with grossly over-sized injectors based on Church's recommendation, knowing full well that it was using piggy-back fuel control so the bigger the injectors, the worse the idle. That has nothing to do with these forums so that's all I'll say about that and yes we've already spoken on the phone about that issue.
I'm going to switch to E85 on stock turbo soon, so hearing that 1000cc injectors for some reason aren't cutting it with you guys but others are saying 1000cc injectors are hitting 80% IDC on stock turbo/E85 and 97% IDC on a red/E85 makes me wonder why there's such a difference.
DW 1000cc's aren't going to be available for who knows how long, so I might end up with FIC 1100cc or go with the DW 1500cc.
So any update on why he was at 97% or 100% IDC using stock turbo on E85 with the 255lph pump and DW 1000cc injectors?
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From: Long Beach, CA
that could be possible, but again i wouldnt know as i dont own a SST, nor did i tune the car...
...on a stock turbo at high rpm i would be almost impossible to boost spike since the turbo is out of breath... even if the ecu demanded some outrageous duty cycle at high rpm the turbo wouldnt give it.... the lower the rpm, the more likely it is possible...
care to shed some light?
most AWD platorms that come thru here are MT, this is the 2nd SST that's came thru here out of numerous MT 8's, 9's, 10's, subies, etc.
thats one of the reasons im on this board... to expand my knowledge base, so again care to elaborate
...on a stock turbo at high rpm i would be almost impossible to boost spike since the turbo is out of breath... even if the ecu demanded some outrageous duty cycle at high rpm the turbo wouldnt give it.... the lower the rpm, the more likely it is possible...
care to shed some light?
most AWD platorms that come thru here are MT, this is the 2nd SST that's came thru here out of numerous MT 8's, 9's, 10's, subies, etc.
thats one of the reasons im on this board... to expand my knowledge base, so again care to elaborate
Last edited by palmerblock; Apr 6, 2010 at 12:45 AM.
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From: Burbank CA
