CommodoresPlus

being so far away from the exhaust port, they need heaters to keep them at the correct operating temperature. The pre/post o2 sensor combo is part of the catalyst efficiency algorithm. Aside from any processing the CATs may do to the exhaust gas, the further away from the port you are, the more lag you get and chance of leaks etc. affecting the…[Read more]

I believe the powerdex uses a LSU4.2? You can still use this with Techedge, depending which version you get you need to change jumpers and reflash to suit LSU4.9 if you change. LSU4.2 is still a good sensor tho. Techedge also supply sensors at a reasonable price.

I believe you can turn off the SRS in the dash with a TECHII, I know you can set…[Read more]

Funny you mention serial wideband, the reason I asked which you were running was to see if you already had serial. To be honest, I use both AD and serial on my flashscan and don’t have issues with offset but some people seem to be plagued with it… really depends what you want to do… for my race car, I use the Techedge, after you look at…[Read more]

Very interesting setup! do you have any pics?

The terminology comes from the response curve of the sensor, a ‘narrowband’ sensor is only really accurate around stoich (lambda = 1), either side of this the voltage response is very sharp behaving more like a switch. If you look at a data log of narrowband sensors in exhaust running at stoich you will see it oscillating very quickly either…[Read more]

what wideband are you using?

edit. sorry just saw the threads above.

what wideband are you using?

Very nice! Love a clean white VS!

whered you get the HDT headlight covers from?

with ITB, depending on your setup you may need to run different fueling strategy as map pressure goes straight atmospheric when the throttle opens so you don’t get enough resolution. All can be done on the LS1 ecu with the right tools

Cool thanks, pretty much what I have planned for mine except I use the Rupes pads which are yellow for cut and green for polish from memory

I don’t recall your exact setup but it should just work, the LS1B is a pretty mature platform and popular for conversions even older LT1 have been retrofitted with them. To run a Glide, you would use a manual tune you may need to do some trickery if you make more than 500rwhp in terms of tune scaling in order to have a 100% driveable stock…[Read more]

glad I can contribute to the other brains on here. A forum like this with great tech info and builds is a rare find these days.

There is a lot that isn’t displayed in EFILive or any other aftermarket editing program. With over 2MB of Flash it would be several peoples life work to reveal them all and not to mention, most aren’t needed once its all setup by GM. Even the older stuff with 1/20 of the size, when all the parameters are displayed from the calibration its very…[Read more]

Also, there is a “tip in” torque limiting and tip in ETC rate limits (rate at which ETC can open). Check your Pedal vs. TPS trace in the log to see if it is damped, you don’t want an undamped response as it will cause the TB motor to wear out quickly but quicken it up to make sure its responsive. Tip in torque reduction could probably be…[Read more]

Ok, so for anyone following along – BTM = Brake Torque Management it helps manages delivered engine torque when the brakes are ‘applied’ one of the reasons is it helps with braking rather than have it push through. (BTM is disabled on manuals). So when the brakes input is active the ECM limits delivered torque to a certain amount based on…[Read more]

Glad to hear its sorted… now you can get back to making vids WRC style

What kind of buffer did you use?

great software, a little quirky but you get used to it.

One day I hope to find the time (and $$) to fully dyno tune a off the shelf setup followed by a custom setup as determined by pipemax.

do it! but just the highlights

very nice! I really need to finish polishing mine… What product are you using?