MBC=Slower SPOOL?!
#1
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MBC=Slower SPOOL?!
So i put on my mbc, its adjusted to 7.5ish psi..
The wastegate is set at about 5.5 psi, the max.
I have the MBC plugged in right, using the nipple off of the turbo like the instructions said.(I also tried it off of the intake manifold, no good.)
Im getting full spool of 7.5 psi at about 6k rpms, i used to get a full spool of 5.5psi at 4k, and was told these MBC's are supposed to INCREASE spool?!
Only other thing i can think of is setting the wastegate at the lowest psi setting, but id like to get some input before i go ahead with it.
(the MBC is a generic ebay one, with bleeder hole drilled in the side)
The wastegate is set at about 5.5 psi, the max.
I have the MBC plugged in right, using the nipple off of the turbo like the instructions said.(I also tried it off of the intake manifold, no good.)
Im getting full spool of 7.5 psi at about 6k rpms, i used to get a full spool of 5.5psi at 4k, and was told these MBC's are supposed to INCREASE spool?!
Only other thing i can think of is setting the wastegate at the lowest psi setting, but id like to get some input before i go ahead with it.
(the MBC is a generic ebay one, with bleeder hole drilled in the side)
#7
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what kind of bc is it? bleed valve? as in lets boost build at the WG while it builds at the gauge?
might want to supplement with the ball 'n spring type. they are the best for improving spool.
might want to supplement with the ball 'n spring type. they are the best for improving spool.
#9
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With the mbc set for 10 psi, my datalogs show that I don't get to 10psi until 5k rpm, I then overshoot to 12, and settle back to 10 towards redline
If you don't mind, see if you have any datalogs to verify. Would be interesting if you spool that much quicker than my car (and I'd want to know why).
#10
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Im pretty certain if i went back to straight vac line i would have no problem hitting 5 psi before 4k rpm.
I drove to the PO box to pick up my MBC, hitting 6ish psi at about 4k, i then installed it in the parking lot and played with it until i got it to max out around 7psi, after all of this i watched my boost gauge and tach closely only to discover i spool a few thousand rpms LATER.
ahhh, man i feel like my car is so shitty right now it sucks...
The ******* engine dies every other stoplight...
AHHHHH!'
lol.
I drove to the PO box to pick up my MBC, hitting 6ish psi at about 4k, i then installed it in the parking lot and played with it until i got it to max out around 7psi, after all of this i watched my boost gauge and tach closely only to discover i spool a few thousand rpms LATER.
ahhh, man i feel like my car is so shitty right now it sucks...
The ******* engine dies every other stoplight...
AHHHHH!'
lol.
#12
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if i very slowly come to a stop using the gear to let the rpms come down to where idle is it will not mess up much.
If i just drop the throttle from 3 or 4k rpms the engine will pretty much die.
At idle the BOV is for sure not leaking, are you thinking it may be venting and causing the idle droop?
I bevelive the dashpot is working just fine, my dad(ex mazda mechanic) said it seems to be working correctly, and we sprayed it with wd just in case.
If i just drop the throttle from 3 or 4k rpms the engine will pretty much die.
At idle the BOV is for sure not leaking, are you thinking it may be venting and causing the idle droop?
I bevelive the dashpot is working just fine, my dad(ex mazda mechanic) said it seems to be working correctly, and we sprayed it with wd just in case.
#17
In what gear? Using what device to measure boost?
With the mbc set for 10 psi, my datalogs show that I don't get to 10psi until 5k rpm, I then overshoot to 12, and settle back to 10 towards redline
If you don't mind, see if you have any datalogs to verify. Would be interesting if you spool that much quicker than my car (and I'd want to know why).
With the mbc set for 10 psi, my datalogs show that I don't get to 10psi until 5k rpm, I then overshoot to 12, and settle back to 10 towards redline
If you don't mind, see if you have any datalogs to verify. Would be interesting if you spool that much quicker than my car (and I'd want to know why).
3rd gear i think it does but maybe i'm off i haven't driven the car in months so i could be wrong, i don't have any datalogs either