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.mazda.speed.
05-04-2009, 10:53 AM
My car is backfireing like CRAZY!
i hear it every shift, and downshift. Not always that loud but i can always hear it.
My mods are vibrant, FMIC, Upgraded T-25.
Car was flashed a couple years ago.
I know its running really rich i am installing my wideband when i get time.
Will another flash help?
I do not want to waste money on an ecu because im swapping motor's in 8 months.
mike2225
05-04-2009, 11:25 AM
Are you running a BOV?
kicknmazdaspd
05-04-2009, 11:26 AM
check your exhaust for holes.
Patrickenator
05-04-2009, 12:40 PM
mine does too. CEL for emissions but its brand new...i think the Vibrant just does that sometimes but it doesn't bother me too much.
.mazda.speed.
05-04-2009, 09:21 PM
No like its bad, like crazy rich. I think the car should be much quicker then it is right now.
Yes im running a BOV.......

Will re-flashing do anything for me?
Is a tuner able to do anything at all with the stock ecu?
haze20
05-04-2009, 09:25 PM
My car backfires. All MSP's run rich as hell. I have the vibrant also.
speedracer
05-04-2009, 09:29 PM
my MSP does it too with the CorkSport.
Are you running catless???
haze20
05-04-2009, 09:48 PM
Nope. The Vibrant has a hi-flow.
.mazda.speed.
05-04-2009, 11:26 PM
k my question,
Is there a way to somewhat tune the ecu?
I got a flash done a few years back before all the mods.
I am just trying to actually use the power that i should be getting.
Thanks all for the help.
KrayzieFox
05-05-2009, 12:02 AM
SS AFC
http://siteground207.com/~protegeg/product_info.php?cPath=32_165&products_id=866
SeR_Cyclops
05-05-2009, 12:10 AM
Something is wrong, even with a open down pipe my car dont backfire everytime i shift or somthing. i mean it does it sometimes usually its more of a gargle than a actually boom. Get that wideband in ASAP and see what the deal is.
.mazda.speed.
05-05-2009, 10:01 AM
SS AFC
http://siteground207.com/~protegeg/product_info.php?cPath=32_165&products_id=866

Im swapping my motor in 8 months so i dont want to waste money on that. Probably going to go haltech.

So there is no way to "tune" the stock ecu?
Boosted03MSP
05-05-2009, 10:03 AM
Nope. Some type of piggy back is required. These arent german cars, you cant just "chip" the stock ecu. You might as well deal with it, wait for your motor swap and go stand alone :)
.mazda.speed.
05-05-2009, 10:56 AM
ok thanks, thats what i thought.
So a re-flash probably wont do much either then ?
lp216
05-05-2009, 11:08 AM
ok thanks, thats what i thought.
So a re-flash probably wont do much either then ?

If your ecu is already re-flashed, it won't change anything.
mike2225
05-05-2009, 12:10 PM
My car backfires alot because of the bov creating a ultra rich A/F between shifts and it ignites in the hot exhaust.You should get some kind of tuning solution because the msp runs so damn rich and also relocate or recirculate your bov and that should solve your problem
HondaEat-R
05-06-2009, 07:50 PM
My car backfires alot because of the bov creating a ultra rich A/F between shifts and it ignites in the hot exhaust.You should get some kind of tuning solution because the msp runs so damn rich and also relocate or recirculate your bov and that should solve your problem

Bingo.

If you're venting the BOV you need to run the "dual set-up", or relocate the MAF. OR you can recirculate the air and keep your MAF where it is. This is likely your issue. The more info you give, the better we can help you...