Is it normal for the car to backfire after 1st, 2nd and 3rd shift. I am cobb stage 2 with a Agency Power BOV and SPT intake.
I have a cated DP. I know the bov caused it.. But the questions isn't why is doing it. I just want to know if its going to hurt anything to have afterfire.
my car starts on fire after every shift. its awesome. and i dont mean fire comes out of the tailpipe, i mean the whole car literally bursts into flames, goes out, then repeats the process during the next shift. problem?
Doesnt really hurt anything that much... besides your ego because people around you think you are a ricer:rofl::rofl: jk
Oh. You have one of those neat little catalyst things. The backfiring may very well destroy the cat, so I would consider that. A destroyed cat will clog your exhaust and all sorts of bad things will happen. You can either go catless (which shouldn't be hard. Someone may very well be willing to give you their catless pipe plus cash), gut the downpipe (pointless) or get rid of the BOV (winn4r).
wtf i have a HKS SS, and my dang car rarely shoots a flame out. Then i see other posting "fireball after every shift". I want fireballs lol.
its simply a result of the car running rich because something has altered on the engine without a tune. the ECU doesnt know whats going on so dumps extra fuel to run safer. which in turn gives you shitty gas mileage and the afterfire in the exhaust
Nah, he's not really tuned for the bov....there is no real way to "tune" (to my knowledge) for the bov unless you switch to a blow through MAF with the bov located before the MAF sensor if you are using Cobb. Some other engine management systems have a way of making it so that that air is not counted...MAP based system would work. But he is not tuned for his bov...he is pretty much running a slightly modified version of the Vf39 2.0 ots map from cobb. I literally only spent about 15 minutes making his current map drivable and have not had the chance to do much to his car other than that so far. Last time I looked there was no table in the stock ECU that says "Yes I am releasing all the air I just metered with the MAF sensor to the atmosphere and know exactly how much air is being released." If that table is there....with a little check box by it somewhere...well, guess I just missed it, lol.
Eh, not quite right. It is accounting for every bit of air that it has metered being there. This includes all the air that is dumped out in an atmospheric BOV. It is adding fuel for all that air and when the air is not there, it causes it to run rich. Think of it this way: 1 unit of fuel for every 1 unit of air ecu thinks there is 10 units of air in there and injects 10 units of fuel to run right BOV dumps out 5 units of air...ECU still dumps in 10 units of fuel. Now we have 2x the fuel we need to run correct. Car runs super rich until it corrects itself eventually. I have seen high 8's and low 9's with a 50/50 bov. Course I have also seen close to that (high 9s) with a recirc, but not quite as bad.
I actually seem to notice better gas millage. The BOV I have is 50/50.. Half of the air is recycled and the other half released. Also the car seems to pull a lot harder under WOT.