stock400whp

98 ws6 5.3 turbo t76

First question is e85 conversion.

I decided to switch to e85 last night. just after the switch.(the only thing changed on hptuner was stoich ive notice 2 things.
1. the car cuts off right away when i let off throttle.
2. it seems to pull harder or e85?

the first i dont mind or care.
but the second surprised me. i didnt expect it to pull harder(it was at night-so its not like it was on a hot day where i would expect it) it feels like it made more power. I wanted to switch so I can raise the boost to 20psi. so this was not expected at all so i dont think its a placebo effect

is it possible that the car makes more power with just a simply switch?
I know i will still need to fine tune it(lots of area of rich spots) so theres deffinitely more room.

has anyone experience this or can explain this to me.
i would think with the same tune it wouldnt make a difference.



also im currently using deka 60# injectors. the tune on the car is pretty good.
but im out of injectors and would like to switch to 80#

since everything is calibrated for 60# already. would it be possible to do the following:
1. simply multiply the flow rate by 1.33
2. keep the injector offset vs volts ,sort pulse adder, min pulsewidth since its the same brand-i figure it acts similar?


i do not have an adjustable regulator and really dont have to have to pay a few hundred for a retune /calibration.

im starting to get comfortable with tuning but calibration of the injector im just not understanding right now.

willizm

iTrader: (10)

If you are planning on pushing 20#'s you are going to need much larger injectors. The ID1300's are a full stainless internal and are great with e85. As for the power thing, I'm not sure. E85 affords a higher ceiling for both timing and boost than 93oct could. I'd think you wouldn't notice much of a difference without adding timing and boost but who knows.

stock400whp

thanks for the reply

ya thats what i thought to and I was not expecting it. The only thing i can think of is that my timing/tune favors the e85 more than 91.

and wow those injectors are pricey.
deka 80# are e85 compatible last I check and budget friendly.

im for sure upgrading the injector to raise the boost but was curious about the injector data. if its something I scale or do i have to find the actual data

lurker1978

Could it possibly be the greater exhaust volume of the e-85 causing the turbo to spool faster that you're feeling?

ZYBORG

iTrader: (1)

Thats odd, wouldn't have thought that you would have felt an improvement without any changes in the tune...

66Chevellelq4

If you're gong to be pushing 20lbs of boost the 80lb injectors will be at max duty cycle pretty quick. Use an online calc to figure out what would work best for you.

stock400whp

80# i think is going to be the max I need.

I dont think I will even push it that far though. im only looking for around 550-600whp. I think ill get that at around 17-18?