msp+mbc= boost spike! wtf

[ARunto]

i had 3-4 psi spikes with my MBC then i picked up a Greddy Profec-B Spec 1 and have no spiking.

 

[ONRAILS]

i had 3-4 psi spikes with my MBC then i picked up a Greddy Profec-B Spec 1 and have no spiking.

Where did you buy yours, and how much? Looking for a Profec B (not spec 2).

 

[StreetUnit]

Go electronic.

 

[celdridge]

Where did you buy yours, and how much? Looking for a Profec B (not spec 2).

You really really want that Profec B - Non spec II model ... dont you. Why?

 

[StreetUnit]

I am running 9.8 lbs, spikes to 10.2 and settles. Spools quick as hell. PR B-II

 

[DiscreetSpeed]

You really really want that Profec B - Non spec II model ... dont you. Why?

lol because others and i feels its a better bc(headbang)

 

[DiscreetSpeed]

I am running 9.8 lbs, spikes to 10.2 and settles. Spools quick as hell. PR B-II

im runnin 15psi no spikes...even from a 4 grand punch(fight)
this is why

oh yeah quick spool up as well

 

[DiscreetSpeed]

Go electronic.

the b is somewhat electronic

 

[celdridge]

I am running 9.8 lbs, spikes to 10.2 and settles. Spools quick as hell. PR B-II

As soon as i come up with the money ... im buying one ... keep them at that killer price. All the local stores here want 358.00 for them. If i just didnt pay for a vegas trip i would buy one today.

 

[ARunto]

Where did you buy yours, and how much? Looking for a Profec B (not spec 2).

i got mine of ebay for $200

 

[ARunto]

You really really want that Profec B - Non spec II model ... dont you. Why?

IMO the Spec-1 version is better. It is simpler to adjust. Just set and go. Plus like DS said it works great. I've had mine to 15psi too with no spikes.

 

[DiscreetSpeed]

IMO the Spec-1 version is better. It is simpler to adjust. Just set and go. Plus like DS said it works great. I've had mine to 15psi too with no spikes.

nuff said(headbang)

 

[1FASTMP5]

it worked!!!!!! at the same settings i was at, im now running 7psi first stage and
spiking slightly to 9.5 and holding at 8 psi in second stage. i ended up only having drill the brass part of the boost control out with a 1/16 drill bit. boost spike is pretty much all gone.
so now that its taken care time to turn up the boost!(headbang) s***, ive only been running 9.5 psi on high boost setting this hole time. i just turned it up to 12psi and it fills really nice. 1/4 track here i come.......

 

[505zoom]

it worked!!!!!! at the same settings i was at, im now running 7psi first stage and
spiking slightly to 9.5 and holding at 8 psi in second stage. i ended up only having drill the brass part of the boost control out with a 1/16 drill bit. boost spike is pretty much all gone.
so now that its taken care time to turn up the boost!(headbang) s***, ive only been running 9.5 psi on high boost setting this hole time. i just turned it up to 12psi and it fills really nice. 1/4 track here i come.......

Have you noticed any decrease in spool up time? Not that it was ever very slow, but just wondering because that is a side effect of drilling too large of a hole.

 

[1FASTMP5]

Have you noticed any decrease in spool up time? Not that it was ever very slow, but just wondering because that is a side effect of drilling too large of a hole.

not that i can tell.....i need to drive around some more and do some more test pulls.(eekdance) btw, i really didnt have to drill out the mbc much at all.

 

[stdntDrvr]

i had a friend with the joep kit on his msp...he fried his turbo due to the boost spiking like that...i'd take it off if i were you.

 

[DiscreetSpeed]

i had a friend with the joep kit on his msp...he fried his turbo due to the boost spiking like that...i'd take it off if i were you.

haha wtf?..............dude to what spiking to 12 or 15psi(RTM)

 

[jersey_emt]

i had a friend with the joep kit on his msp...he fried his turbo due to the boost spiking like that...i'd take it off if i were you.

Boost spike won't cause a turbo to fail.

 

[Shane-O]

This post helped me out a lot. I didn't know all the differences between Manual and electronic Boost Controllers. Thanks for the help everyone.

 

[StreetUnit]

Point being, go electronic. Its not worth the risk of a MBC. Or is it? It is your cars, but we are just trying to help.