E85 Injector Upgrade Recommendations
#47
01-13-2015 | 05:19 PM
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i just got a set of new Bosch 1400s thru Undercover for 997 and I am extremely pleased with their driveability on both Pump gas and E85. they were also alot cheaper than the 2000s and I wouldn't hesitate to recommend them to anyone! i was not really happy with 2000s UNTIL I went to ProEFI at which point they were fine. Stock ECU it was ugly at first and after ALOT of time and tuning it got much better.
i would like to add and back up Dr.Robs point on E85.
E85 is awesome to A point and its nice to always be on kill. I am going to call that point 7-800whp. Reason why I say that it because you need SO MUCH invested in the fuel system and tuning to have the car running right. When you are making big power on ethanol the car has to flow an enormous amount of fuel which means big pumps ( big pumps means they are loud), OK no problem, but chances are you are also running high boost so the fuel pumps have to sustain and raise pressure while not dropping off too much flow ( which is what happens). Next you got the return issues, for big power you need to use a big orifice regulator because even if you stage the pumps when the second one kicks on its going to cause a spike unless you have a proper regulator and a proper return with no restrictions. Want a flexfuel sensor in return better Y it off or it will cause problems.
then factor in the whole stupid shape of the gas tank, and the basket and the stupid jet pumps. its just one giant PITA.
VS. race gas twin 044s MS109, 1000cc injectors, 1000whp all day. yeah its more money alot more money per gallon but its easy.
i would like to add and back up Dr.Robs point on E85.
E85 is awesome to A point and its nice to always be on kill. I am going to call that point 7-800whp. Reason why I say that it because you need SO MUCH invested in the fuel system and tuning to have the car running right. When you are making big power on ethanol the car has to flow an enormous amount of fuel which means big pumps ( big pumps means they are loud), OK no problem, but chances are you are also running high boost so the fuel pumps have to sustain and raise pressure while not dropping off too much flow ( which is what happens). Next you got the return issues, for big power you need to use a big orifice regulator because even if you stage the pumps when the second one kicks on its going to cause a spike unless you have a proper regulator and a proper return with no restrictions. Want a flexfuel sensor in return better Y it off or it will cause problems.
then factor in the whole stupid shape of the gas tank, and the basket and the stupid jet pumps. its just one giant PITA.
VS. race gas twin 044s MS109, 1000cc injectors, 1000whp all day. yeah its more money alot more money per gallon but its easy.
back when i was a young lad 400 was a big build! now if you don't have 4 digit hp your just taking up space
#48
01-14-2015 | 08:17 AM
and TVs were black and white
hehe JK
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#TeamAIM
997TT SilverSpool - 210.8 mph 1/2 Mile WR Apr 2019, 9.2 @ 168 mph 1/4 Mile Manual World Record , 3.15 60-130 mph , 2.72 100-150 mph , 1400whp E85
996TT SpoolBus - 204.6 mph 1/2 Mile 996TT WR Aug 2018, 9.5 @ 154 mph, 3.23 60-130 mph, 2.5 100-150 mph Manual Porsche World Record, 1400whp E85
997TT SlowBerry - 205.0 mph 1/2 Mile WR Nov 2018, 9.7 @ 170 mph 1/4 Mile , 3.2 60-130 mph , 2.4 100-150 mph , 1420whp E85
ESMOTOR | DO88 | TPC DSC | SYVECS | COBB | IPD | KLINE | XONA | AMS | ID | ERP | SACHS | TURBOSMART | CSF | DODSON |
#TeamAIM
997TT SilverSpool - 210.8 mph 1/2 Mile WR Apr 2019, 9.2 @ 168 mph 1/4 Mile Manual World Record , 3.15 60-130 mph , 2.72 100-150 mph , 1400whp E85
996TT SpoolBus - 204.6 mph 1/2 Mile 996TT WR Aug 2018, 9.5 @ 154 mph, 3.23 60-130 mph, 2.5 100-150 mph Manual Porsche World Record, 1400whp E85
997TT SlowBerry - 205.0 mph 1/2 Mile WR Nov 2018, 9.7 @ 170 mph 1/4 Mile , 3.2 60-130 mph , 2.4 100-150 mph , 1420whp E85
ESMOTOR | DO88 | TPC DSC | SYVECS | COBB | IPD | KLINE | XONA | AMS | ID | ERP | SACHS | TURBOSMART | CSF | DODSON |
#49
01-14-2015 | 02:49 PM
Banned
Joined: Dec 2008
Posts: 5,551
From: tn
Rep Power: 626
My childhood cell fone was 2 cans and a string!
just takes some time to get it right. 
#53
01-15-2015 | 02:55 PM
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Joined: Aug 2014
Posts: 909
From: Australia
Rep Power: 105
Just tuned back to 93 octane today (this will be for a few fill ups).... car is positively slow in comparison... data-logged today in same temps on E85 and 93 octane... 120 bhp difference
Found out I actually have very little knock on the E85 and my "noise" is some of the leads I did not adequately tie down after going MAFLESS
dohhhhhhhhhh
Found out I actually have very little knock on the E85 and my "noise" is some of the leads I did not adequately tie down after going MAFLESS
dohhhhhhhhhh
#55
01-15-2015 | 06:25 PM
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Joined: Aug 2014
Posts: 909
From: Australia
Rep Power: 105
93 octane feels like the car when it was stock with exhaust
:-)
Still, fun today in 33F temps.... veritable heatwave in boring old Quogue
It was 108F the other day in my hometown in Australia when it was 0F here (windchill -22F)
:-)
Still, fun today in 33F temps.... veritable heatwave in boring old Quogue
It was 108F the other day in my hometown in Australia when it was 0F here (windchill -22F)
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