SwampWS6

iTrader: (7)

My car now is setup now to get 14#s off a 2 bar map. I have the 24x conversion on a LT1. What cold I do to surpass the 14# limiter besides getting a 3 bar map? Are their certain steps that need to be taken to reach a max of 20#s? Im just curious right now. Fuel system should support it and gate pressure is set at 8#s.

Or if this was your setup, how far would you push it? Trying to go as fast as possible. 80% track car 20% street car if that matters

JoeNova

Get the 3 bar MAP. Absolutely no reason to risk pushing 2.5 bar on a 2 bar MAP when you can get a 3 bar MAP sensor for $40.

SwampWS6

iTrader: (7)

Right. I was just wondering if I would have any other restrictions. As long as I burn true E85 I should be ok. Just wondering with 10:5cr how far could I push the setup...............

GMCtrk

iTrader: (23)

I'm 10.6:1, seen 20 psi before, run 16-17 routinely. On E48. I have a 2.5 bar map which is a modified Cobalt SS 2 bar sensor.

SwampWS6

iTrader: (7)

Cool. Thats what i was wanting to know. Do I have to run different fuel in order to hit that boost range?

SwampWS6

iTrader: (7)

Anymore input?

OverblownZ/28

What size injectors?

SwampWS6

iTrader: (7)

Its in sig. 1000cc

mkvamso

iTrader: (2)

I'm at just a little less compression than you with e85 and twin gt35s
Timing is pretty low, I've ran it up to 19 psi without any issues
Using 84lb injectors at 75psi base pressure

Bigger map is a must, you can try and scale it but the resolution will go to **** and it'll basically be guess work

SwampWS6

iTrader: (7)

Thanks bro. Didnt know if I needed to run better fuel or something to hit close to 20#s. Thats the main reason why I went with the 24x conversion cuz it would give me more tunability and gain more outta the car. Whereas the LT1 ignition and computer was very limited as to working with that much boost.

What MAP are you using?

mkvamso

iTrader: (2)

I'm using the efi source 3 bar
It's cheap and has had pretty good results so far

93camaro_zzz

iTrader: (13)

I'm at 18psi on my 2bar MAP SD setup. Nothing wrong with pushing a few more psi over 14.7 if you know what you are doing. Saves me from not only having to buy a 3 bar map, but also buy more credits from hptuners to do a 3 bar custom OS.

mkvamso

iTrader: (2)

Aren't they free now?

93camaro_zzz

iTrader: (13)

That would be the first time I heard that. My buddy just had to buy his 3 bar OS, and that was only about 2 months ago. So did it happen recently?

mkvamso

iTrader: (2)

I think so
Tuned mine about two weeks ago and it didn't cost a thing for the different os

Do you have pro?

Monte4ever

iTrader: (2)

More info on this please. We can call HPTUNERS and get a 3 bar OS for free?

willizm

iTrader: (10)

What AFR are you guys shooting for on e85?

93camaro_zzz

iTrader: (13)

For naturally aspirated or boosted setup?

mkvamso

iTrader: (2)

Prefer lamda reading over air fuel.
My car is tuned to .77-.78 at wot on e85

willizm

iTrader: (10)

we're in the FI section for a reason Of course boosted
Yeah I go off Lambda as well. Just curious what folks target. I'm shooting for .78-.80 on e85