92/92 tuning advice

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Jul 13, 2010 | 01:33 AM

02_ramair_ta

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From: Hanford, Ca

92/92 tuning advice

my tune was pretty spot on. Jayson at MTI tuned it prior.

So I installed a Fast 92/92, some 42# SVO Injs..

I feel confident I followed the inj scaling write up, and spread sheet correctly... but I still think my idle is off, and the air tables are not right.

from what I have read, I need to log LTFTs, adjust VE, then STFTs and adjust VE again.. Is that really all that needs to be adjusted to tune for the intake??

I am new to tuning, and I have HPTuners..

thanks in advance

Jul 13, 2010 | 06:04 AM

nikon1999

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From: Wellesley, MA

For best control of the injectors, sometimes more than IFR needs to be changed. Short pulse, adder, etc

you need to get your RAF re-dialed in probably, the 92mm throttle body will change those variables, my 90mm did quite a bit.

For tuning VE i disable LTFT and go off of STFT, as they respond much quicker. Or better yet if you have a wideband disable STFT as well and tune with afr/error % in hp tuners.

If your running MAF make sure you dial that in after you get your VE in line.

Jul 13, 2010 | 06:17 AM

02_ramair_ta

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Thanks, I'll look into those too, anything else??

Jul 13, 2010 | 11:23 AM

KRAZY K 2000 TA

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From: Stockton, NY

short pulse adder,min. injector pulse width,flowrate vs. KPA, and your voltage table these are not drop in and run injectors at all

Jul 13, 2010 | 05:55 PM

02_ramair_ta

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I will look at those also, what should I go off, to adjust those figures?

thanks again.

Jul 17, 2010 | 03:26 AM

02_ramair_ta

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Wideband is comin in the mail, so I'm going to follow a couple write ups on hptuners and go
From there, looks like I still need to figure out the green tops, to ensure they are right.. I have compared with 2-3 different tunes, and I have the same figures they have, which could just be nothing more than all 3 of us are wrong!! But I want to be sure my pulse width, and all are correct for the svo 42#ers, is there a method to doing that?

Jul 17, 2010 | 10:23 AM

JimMueller

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From: Casselberry FL

The easiest way to get all of your injector tables accurate is to use OEM injectors to which you can use the OEM data. There is an expensive DVD from Greg Banish which details these settings for some common aftermarket injectors. You can calculate the IFR table, but from my research there isn't a way to calculate the other tables without sending the injectors to a company to compile the data for you. Or you can do it the way the LS1er's had been doing it between LS1Edit and Greg Banish...alter the IFR table, leave the other injector tables alone, and try to fudge the other tables from logging to get the car to behave correctly.

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