12's on stock turbo running E-85!
Mar 27, 2010, 03:34 PM
#1
12's on stock turbo running E-85!
Well guys,
Only change from my first 12 second time slip from last year is that this one was on E-85 instead of 93 octane, and EVO VIII MR wheels with Advan tires instead of Enkies with Blizzaks.
The stock fuel system can only handle a few seconds at high boost / heavy load before I go lean. Running through the gears, boost falls off fast enough that this isn't a problem until I get into 5th gear. After 3 seconds in 5th gear at over 21 psi of boost (and over 100% duty cycle on stock injectors) I start to go lean and have to let off the throttle.
Even with this issue I was able to pull a 12.916 @ 102.81 I was planning to crank up the boost higher, and advance the timing... but with this issue I saw no reason to push any harder on the stock fuel system.
Here is the time slip:
Keith
Only change from my first 12 second time slip from last year is that this one was on E-85 instead of 93 octane, and EVO VIII MR wheels with Advan tires instead of Enkies with Blizzaks.
The stock fuel system can only handle a few seconds at high boost / heavy load before I go lean. Running through the gears, boost falls off fast enough that this isn't a problem until I get into 5th gear. After 3 seconds in 5th gear at over 21 psi of boost (and over 100% duty cycle on stock injectors) I start to go lean and have to let off the throttle.
Even with this issue I was able to pull a 12.916 @ 102.81 I was planning to crank up the boost higher, and advance the timing... but with this issue I saw no reason to push any harder on the stock fuel system.
Here is the time slip:
Keith
Last edited by Fourdoor; Mar 27, 2010 at 03:55 PM.
Mar 27, 2010, 04:00 PM
#3
Thanks!
I am getting upgraded cams, ported intake manifold, and the double pumper fuel system with 1000 cc injectors in the next week or so installed and tuned by Buschur Racing on E-85... just waiting for the cams to come in
Keith
I am getting upgraded cams, ported intake manifold, and the double pumper fuel system with 1000 cc injectors in the next week or so installed and tuned by Buschur Racing on E-85... just waiting for the cams to come in
Keith
Mar 28, 2010, 03:21 PM
#10
Nope. Due to the need for larger injectors and fuel system upgrade I chose not to do a new custom tune for the car. Just re-scaling the injectors got me to the point where the car is fine for daily driving and even "spirited" driving as long as it doesn't involve a long pull in a single gear resulting in leaning out the engine... so I will leave it as is until I pun in the fuel system, cams, and ported intake manifold.
Keith
Keith
Mar 28, 2010, 07:18 PM
#12
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nice run i just pull out a 12.95 @104 mph on stock tires with 93 oct tune at 22 psi and im running rich a lot so no problem here with the injectors!!! so i can expect going lower than that next week with fine tunning here my slip with a pic of my car
Mar 29, 2010, 07:53 PM
#15
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UR turbo back, UR intake, UR hardpipes (uicp and licp), AMS boost pill and tweaked ecuflash with 7-8 hours of testing but still runnin very rich so might be able to get better but @ 26 psi was doin 13.2 and now im doing 22 psi and runnin better i played with the timing and the mivec with a 93 oct tune