Too much boost! help with mbc install

read the post by jon....mrlilguy . he explains it much better and in full detail. he also states that the xede is far superior to the standback. it had to do with the sample/adjustment rate or something like that.
http://www.mazdas247.com/forum/showthread.php?t=123699365

the reality of it is sensor modification is not tuning. a hard ecu flash will work great but a piggy back...no thanks. laloosh proved that point to me. a "tuned" standback with an awesome dead straight 11:1 line for AFR one day, then the temp drops 20 degrees and the car was over 13:1 ! and there is not a damn thing the standback could do about it. he pulled the "tuner" off the car and it holds much better AFR's in all temps and performs just as well.

the only blown motors i have seen was from 2 standback equipped MS6's and a few guys trying run a big turbo.
all the guys with MBC's and map clamps or BCD's are running strong. and when i first joined these forums i was told ...... you must be crazy to run an MBC. they cars dont like it. or the famous.... the ecu will tune i the extra boost out !
 
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SPEED3TYPE2 said:
na why cuase you said so... the standback is a coool little computer, you can data log, add fuel , remove fuel, add timeing, remove timeing, plus I run vta with no backfie thanks to the standback..for 600 bucks its good deal. Also you didnt pay 50bucks cuase you had to also buy the fuel cut defender....
Click to expand...

you are right $50 for the MBC and $20for the MAP clamp = $70 !
the data logging is pretty cool, but i have the dashhawk for that. i would not touch the fuel or timing adjustments with that tuner though.....honestly.
stick with the added boost and call it a day. from the few people i know who have data logged and dynoed with that system it shows VERY inconsistant results. it seems to have a very hard time adjusting to temp. changes.
 
tru-boost said:
read the post by jon....mrlilguy . he explains it much better and in full detail. he also states that the xede is far superior to the standback. it had to do with the sample/adjustment rate or something like that.
http://www.mazdas247.com/forum/showthread.php?t=123699365

the reality of it is sensor modification is not tuning. a hard ecu flash will work great but a piggy back...no thanks. laloosh proved that point to me. a "tuned" standback with an awesome dead straight 11:1 line for AFR one day, then the temp drops 20 degrees and the car was over 13:1 ! and there is not a damn thing the standback could do about it. he pulled the "tuner" off the car and it holds much better AFR's in all temps and performs just as well.

the only blown motors i have seen was from 2 standback equipped MS6's and a few guys trying run a big turbo.
all the guys with MBC's and map clamps or BCD's are running strong. and when i first joined these forums i was told ...... you must be crazy to run an MBC. they cars dont like it. or the famous.... the ecu will tune i the extra boost out !
Click to expand...

yeah I read that post and it bored me honestly. didn't really learn anything from it. that is all about high efficiency direct Injection which these cars are not and redundant s*** that is being spat around in every thread you can find. you don't have uber lean-burn conditions and all that other stuff. it has been proven that removing the swirl valve doesn't hurt and all that other s***.

I learned about Direct Injection when I went to school I watched videos from the VAG and they were much more informative. no offence.

We seem to be keeping AFR's in the 12's range all the time regardless of weather with a piggyback. I was in the car yesterday and it seems to do pretty well, couldn't get on it because of a 13 mile old clutch though. try running a BCD and see how your timing goes above a certain RPM/Boost. Or try running a BCD and a PiggyBack big mistake.
 
i agree about the BCD for sure, thats why i was the one who pioneered the MAP clamp on our cars. the map clamp gives the same results as the piggyback. i just know i wouldn pay my $$$ for a piggy back. i spent too much time, money, and effort on my car to trust it to the hands of a sensor modifier. give me a hard tune written to the ECU and a fuel system to feed the fire and i will be happy. i think the AP will be nice, just too damn pricey. and pretty much worthless without a custom tune. i like the stock ECU and plan to stick with it..... unless something really blows me away. so far the fastest 1/4 mile times in MS3's have all been from stock ECU cars. i dont give a rats ass about what the dyno says. you can have cars lay down 350HP on a dyno that run 13's and a 12 second car that only shows 300HP.
this is very common on srt-4's.
the modded stage 1 cars always dyno higher, but are never as fast as a stage2 car. i'll take the faster car anyday of the week. if somebody else wins the race on paper, so be it.... lets line up !
 
who is we ? i'm on the PG team too ! you didnt disown me just because i dont like piggy back "tuners" did you ? i like you and jason is cool too, i just dont like his tuning choice, thats all. i guess i cant blame him though. he is trying to make the best out of what is available. i personally will wait until i see something i feel is worthy enough for my car.

well it looks like we will both be at "da grove" on april 5th so we will see.
Ken said i will have my slicks by then so it should be fun. i should be easy mid-high 12's so unless jason busts into the 11's with his extra $5K of mods i will not be very impressed considering i am still on a stock intercooler, stock downpipe, stock cat-back, stock turbo, and stock ECU !
 
OP still running okay with it hooked up differently?

We are spiking around 2-3 psi in every gear right now...Is it safe to spike to 19-20?
 
map clamp is better for sure. it doesnt create a boost leak like the BCD does.
spike to 20 is nothing. i hold 25psi in my upper gears from a roll !
 
We are ditching the JoeP MBC and ordering turbosmart. Customer wants the BCD i think, doesnt want to splice the wires on the main harnesses.

Are you running upgraded Fuel pump as well?
 
mazda3mods said:
We are ditching the JoeP MBC and ordering turbosmart. Customer wants the BCD i think, doesnt want to splice the wires on the main harnesses.

Are you running upgraded Fuel pump as well?
Click to expand...

the BCD costs a lot of high end power compare to the map clamp. all that boost leaking out makes it fall on its face up top.
upgraded pump will be here next week !! as for now the car is starving for fuel ....especially when its cold !
 
I'm not running an upgraded pump. I've logged my fuel pressures and afr's with no problems. I'm not even getting the 'sputter' problem that I've read about.
 
mooserov said:
I used wire taps and insulated them from the environment. Just squeezed onto the correct wires and insulated. No cutting.
Click to expand...

Really not a good approach. I understand the reasoning why you did this, however... not the ideal way to do this. The MAP is very sensitive
 
in temps above 45 degrees i am fine with AFR's that drop to high tens/low
11's. when it is cold the AFR's climb into the 12's and my fuel pessure drops a lot. i am usually at 1700psi or so. in the cold it will drop as low 800psi. a pump upgrade is a MUST HAVE if you want more boost.
yes a map clamp must be wired into the harness. if you dont want to tap in near the ecu you can do it off the map sensor wires directly off the sensor, but it will be a pain in the ass !
 
mooserov said:
that's exactly what I did. For some reason, the mbc I have would steadily creep. Works perfect where it is now, and I can inspect the hoses periodically without getting under the car
Click to expand...

Get a different MBc. I had a forge that did that. I added an intake and the spikes we decreased greatly.
 
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