Anyone with FI switch to a 2bar SD OS? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Steve@HPE · 09-10-2012, 01:20 PM

I'm thinking about doing this; right now I'm running MAF only since I have no idea how to tune the virtual VE tables. The primary problem with the MAF only is that the throttle response is sluggish.

camaro1 · 09-11-2012, 04:01 PM

do it, lots of nice features and you can still run maf with a higher hz limit and full cooling fan control and a real ve table

realcanuk · 09-11-2012, 04:48 PM

I've done it on my vette. Has some great features and the extended maf range. I still run maf only like I did before and it runs perfectly. If yours is sluggish there is something not right regardless of the OS.

SC2150 · 09-11-2012, 06:26 PM

Yes, a combo tune still allows the drivability you want from the MAF and opens up WOT.

realcanuk · 09-11-2012, 06:31 PM

Quote:

Originally Posted by SC2150

Yes, a combo tune still allows the drivability you want from the MAF and opens up WOT.

How could running the VE open up WOT? I could never get the combo to work as well as maf only, and trust me, I spent many, many hours trying.

09-13-2012, 09:18 AM

Quote:

Originally Posted by realcanuk

How could running the VE open up WOT? I could never get the combo to work as well as maf only, and trust me, I spent many, many hours trying.

I believe Tracey is referring to the resolution that you now have in boost regions (105+ kpa). I have completed a lot of MAF/VE tunes (Of course you need to tune both) for these Camaros/Corvettes, using a 3BAR Map sensor also to not let FP drop... The 2 BAR OS SD is real nice for a high boost application, but at the same time the "stock" OS has a lot of resolution through the MAF (Increased range over the LS1 ECU), and tunability in the VE tables (Yes with HPT the best way is to use EQ VE program). For high boost the 2 BAR is nice because you can have a lot of resolution across the RPM band, but you lose the compensation factor of the MAF.

Is there a particular reason Steve as to why you want to go 2BAR over the factory OS?

Steve@HPE · 09-13-2012, 08:58 PM

Quote:

Originally Posted by camaro1

do it, lots of nice features and you can still run maf with a higher hz limit and full cooling fan control and a real ve table

I took the plunge and you're exactly right! I ran it several times today in open loop and have the VE tables dialed in. MAF is next and we should be good.

Steve@HPE · 09-13-2012, 09:03 PM

Quote:

Originally Posted by realcanuk

I've done it on my vette. Has some great features and the extended maf range. I still run maf only like I did before and it runs perfectly. If yours is sluggish there is something not right regardless of the OS.

Sluggish was a poor choice of words, throttle transitions are choppy. I want a smooth acceleration.

Started tuning the 2bar VE tables today, I can already tell a difference.

09-10-2012, 01:20 PM	#1
Steve@HPE Drives: 2014 SS/RS Join Date: Feb 2012 Location: North East Florida Posts: 560	Anyone with FI switch to a 2bar SD OS? I'm thinking about doing this; right now I'm running MAF only since I have no idea how to tune the virtual VE tables. The primary problem with the MAF only is that the throttle response is sluggish.

09-11-2012, 04:01 PM	#2
camaro1 Drives: 550+RWHP 2010 camaro Join Date: Sep 2007 Location: wisconsin Posts: 1,588	do it, lots of nice features and you can still run maf with a higher hz limit and full cooling fan control and a real ve table __________________ 415ci stroker, TVS 2300 Magnacharger, cnc heads, cam, yank ss3200 converter, Kooks long tubes, Bwoody true cold air kit, ZL1 Pump, magnaflow 3" cat-back, lowering springs,BMR control arms and tie rod bars, 3.73 gears, diff mounts, RX can, ADM fuel controller

09-11-2012, 04:48 PM	#3
realcanuk Drives: 2007 Corvette C6 983 RWHP Join Date: Dec 2011 Location: Montreal, Canada Posts: 690	I've done it on my vette. Has some great features and the extended maf range. I still run maf only like I did before and it runs perfectly. If yours is sluggish there is something not right regardless of the OS. __________________ 2007 C6 vert, auto, F55, LT3 LME LS402 , WCCH 245 Heads, Pat G. Custom cam YSI / 3.0 pulley, ARH 1 7/8 headers, NPP Dewitts / dual spals, A&A dual pump fuel system. 3.42 polished gears, hardened shafts, Alky control meth, Cartech line lock, ECS axle loops, Trans brace, 6L80 built by me. ID 1000 injectors, comp rockers, Morel lifters, BT springs, Trend 3/8 pushrods, ATI 10% OD Damper Circle D Triple Disc stall 1009 RWHP @ 7000, 817 RWTQ @ 6000,

09-11-2012, 06:26 PM	#4
SC2150 Account Suspended Drives: 2012 Camaro RS, RX supercharged Join Date: Dec 2009 Location: Bradenton, FL Posts: 6,063	Yes, a combo tune still allows the drivability you want from the MAF and opens up WOT.