Si Shane

mad tyte cliffs notes at the bottom:


was told that anything over its possible readings would not work. THen i was informed that if your at xpsi ove the max reading, it will just work from the last collum. That seems to make more sense.\

Well, regardless of the value entered for the injectors, i am getting the same AFR. I went ahead and gave it a run at 14-13 pounds and found myself jumping off the throttlew cause i was seeing near 13 as the afr. After upping th efuel values from around 350-400 to 650+ and seeing very little to no change in the AFR makes me question the accuracy of either my wideband or the statement i'm biding by.

Well obviously enough i stopped doing this, lol. Not that i'm not going to buy a pigtail, or i feel the need to boost more, but i'm just curous.

CN:Why dont the fuel values in the last collumn affect my afr when my map reading is above 11pounds?

Si Shane

stupid question, but up.

_Cyclone_

So... you're still doing this on the stock map sensor? Just curious... what voltage does it read at that kind of pressure?

nfn15037

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Si Shane &raquo;</TD></TR><TR><TD CLASS="quote">mad tyte cliffs notes at the bottom:


was told that anything over its possible readings would not work. THen i was informed that if your at xpsi ove the max reading, it will just work from the last collum. That seems to make more sense.\

Well, regardless of the value entered for the injectors, i am getting the same AFR. I went ahead and gave it a run at 14-13 pounds and found myself jumping off the throttlew cause i was seeing near 13 as the afr. After upping th efuel values from around 350-400 to 650+ and seeing very little to no change in the AFR makes me question the accuracy of either my wideband or the statement i'm biding by.

Well obviously enough i stopped doing this, lol. Not that i'm not going to buy a pigtail, or i feel the need to boost more, but i'm just curous.

CN:Why dont the fuel values in the last collumn affect my afr when my map reading is above 11pounds? </TD></TR></TABLE>

Running out of injector maybe? What is the duty cycle?

Si Shane

definitely not running out of injectors. 1000cc

At 12 pounds it never runs leaner than 12.5:1 and then works it way down nice and rich to 11.9ish by 6000rpm then holds that till redline. No audible detonation at this point either.

It seems the values have reached a maximum (similar to reaching the end of the injector) and allow me to properly run at 12 pounds and not 14.

Mind you i was at 13:1, 14# with a fuel value of around 400.
I then was still at 13:1, 14# with a fuel value of 650.

If i turn the boost down to 12 pounds, the afr just richens up to a nice acceptable level. Whats the deal?

_Cyclone_

keep an eye on the voltage on the map sensor at 11-12psi, then compare to the readings at 14psi.

ndogg

anything over ~11 psi it should be maxed out and reading the same voltage. that means that the ecu does not know you are boosting over 11psi... so it will just run off the last column. what are you using to tune? lemme guess uberdata v 1.65

USDM 4G VTEC

if OBD1 and Hondata u can use the GM 3 bar

if OBDO and TurboEdit
u can use the Motorola 2.5BAR

Si Shane

i'm blammin along with uberdata ost2 i think its 1.8, but i dunno.

Its just really wierd that changing the fuel values doesn't affect the way in which the car runs..