vroomevo

iTrader: (22)

so, what do you guys recommend af ratio for evo8 with green turbo, tbe, IC, 50/50 methanol/water injection(aquamist hfs5)?

i am at 11.1-11.3 from spool up to red line.

is it safe to lean out more? like to 11.5-11.7's?? with methanol/water injection?

lemmonhead

I say ditch the A/F ratio and tune to 0.83 lambda

Vivid Racing

iTrader: (98)

Yes it is safe to lean it out but for everyday safety (road course safety) I would lean out max of 11.7 down to 11.5 by redline on a EVO8. Evo 9 11.8-9 down to 11.5-6. Also what is your timing at?


Evan Smith

SlowCar

iTrader: (4)

it depends on your injectant to fuel ratio...

iirc, if you are still using the 2 jets that was installed when the system was 1st installed...you will be able to tune in the 12s...

proceed with caution.

SlowCar

iTrader: (4)

0.83*14.7=12.2...

-what is the ratio of your meth/water, water, meth to gas ratio?

vroomevo

iTrader: (22)

thanks evan...
i guess i will try to lean out just a little bit...

changed some parts lately...
i haven't touched the timing.

still get knocks in lower gears, like 1st and 2nd gear...
rpm rises so quick that evoscan can't even datalog much.

vroomevo

iTrader: (22)

yeap! haven't touched the aquamist since last year. working flawlessly.
do you recall the size of the jet???
i don't...

aqmist

iTrader: (6)

Here's an image of the color rings on the jets the color indicates sizes


Here's the chart with the color to size


Take a quick peak underhood at the installed jets and cross reference to the chart.

Here's a correlation of the jet versus flow using the Aquamist/Shuflow pump


Nice to see people who were in on the GB's still enjoying the kits

lemmonhead

19-25%

vroomevo

iTrader: (22)

so, jet size are black and red.
i am injecting with two nozzle.

so, i am injecting....how much???

jdmeg6

looks like your injecting 850 ccs of water meth
saw your car outside the merrill lynch building like 5 months ago its beautiful

cij911

iTrader: (14)

I am currently at 11.1 pretty much throughout RPM range at WOT....I am going to try to lean a tad to get closer to 11.5 (and see how the car responds)...I am curious if anyone has logged HP increase from 11.0 to 11.5 -- I'd be surprised if it is more than a few HP at most, but that is a pure guess...

gear head

iTrader: (3)

I can't honestly say how much of a hp increase, however when I leaned mine from 11.2 to 11.5 I noticed the car pulled through 3rd gear a couple tenths of a sec quicker...So far the car is liking it.

spdracr

iTrader: (2)

they tested that somewhere and it was like 0-1 whp lol

cij911

iTrader: (14)

^^ So two different perspectives here .....Anymore thoughts?