Not sure if you could adjust it on decel with DSMLink. I haven't seen any options in it for that. I know the S-AFC II has a setting for it that does just that. Since I guess you no longer have the stock bypass valve, you're going to have to do a blow through MAF-T setup otherwise your car won't run right.

No you can't tune out this condition with Dsmlink. If you want to vent the BOV the only proper method is to run the GM MAF/MAFT setup in a blow through configuration, so you can place the BOV before the air gets metered. Some seem to have good luck with this setup, while others always seem to have issues trying to get it to run right. Personally I'd stick with a 2g MAF & get a proper BOV that recirculates, it just takes another possible problem out of the equation (but I'd still recommend using DSMLink 100%).

I would have to agree with ^^ 100%.

a friend of mine from team trinity, is using GM maf setup now but before installing the gm maf he bov vented, didnt cause any issues for him. anyways he custom made a recirc tube, i'll see if i can get pics of it from him and post it for you. might help you out easier. as i can't remember for the life of me what he used to make it.

vaboys2ndgen said:

a friend of mine from team trinity, is using GM maf setup now but before installing the gm maf he bov vented, didnt cause any issues for him. anyways he custom made a recirc tube, i'll see if i can get pics of it from him and post it for you. might help you out easier. as i can't remember for the life of me what he used to make it.

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This maybe true, but lets face it, its the exception more then the rule. It wouldn't be a recommended path. the above statements prior to this one are correct. The original poster would do best to do a search on the subject. And its nice to hear that another DSM is being "unriced".

I made the mistake of putting a vented BOV on my car before I had the MAF-T, mainly because I got it for free, and it was just a big headache. The car would stall, run rich between shifts and backfire. I also sold my 1g bypass valve to a 2g guy, so I just stuck it out and did the MAF-T in the end.

Some 2Gs 'seem' to have no problems venting to atmosphere, but the air is still lost, the mixture will still temporarily be pig-rich, and power will be through the floor. Don't do it.

As noted above, DSMLink can't account for venting... it's a limitation of the stock air metering system (and the crappy Karmann vortex style MAS). I've installed a MAF-T and GM MAS on three cars so far. As long as you read the manual and set it correctly (or zero it out if you're going to be using DSMLink, which I plan to do when I can find a damn socketing service locally), I have yet to have a problem when they are installed PROPERLY. I did have problems when I didn't pay attention to the orientation of the GM MAS on one, but they went away when I rotated it to keep the center divider level with the ground.

A stock 1G CBV ('bov') is generally rather inexpensive, and there are a number of options for UICP upgrades, or simply using an adapter flange with your stock piping... but might as well upgrade, really, as the stock stuff is terrible. You can usually find a GReddy Type RS/S relatively inexpensively as well, with a recirc adapter.

If I remember correctly v3 will have the decel option. Which makes sense since speed density is on the list as well.

v3 is supposed to have MAF-T capability built in, once it finally gets here.
Decel leaning still will not properly compensate for venting the CBV/BOV. You need to meter the air after the BOV to run properly with an atmospheric vented BOV.

jaday said:

Since it already has a vented TurboXS RFL BOV, and I can't merely recirculate it, here is my question.

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Here's your answer: