Fitted an MBC Today!

[The Flying Moose]

Courtesy of Smithness after a late night visit to his place last night I have completed my first performance mod today on the old girl. Its a little Turbosmart MBC and smithness you were right mate it was a dodle to fit!

After this I was in the "I can do anything" mood so went to halfruads to buy a boost guage so I could get a vauge Idea where I was at.

Thanks to a good few contributions from p fandango on this thread http://www.vpcuk.org/forums/showthread.php?t=29845&highlight=boost+guage that job too was a dodle.

All in all a productive day and pics at the bottom to show!

However what I need to know now is what is a good boost pressure to be working on with standard unmapped T5 with 15g turbo? At the moment its sitting at around 14psi after fiddling. How accurate are these manual guages too? Is it better to crank down to say 12 if the guage reads 14?

Any comments appreciated.

Please excuse rubbish pictures could work how to turn the flash off.

http://i33.tinypic.com/rarbd2.jpg

http://i38.tinypic.com/2ngse21.jpg

[WOODY T5]

looking good mate glad to be of help 14psi is a bar of boost think it will be good at that.

[The Flying Moose]

looking good mate glad to be of help 14psi is a bar of boost think it will be good at that.

Cheers mate ill run at that for a while definately at least now with a guage I can turn it down and get it back to around the same figure.

After seeing and driving your car last night all I seem to be thinking about is "Can I make mine go like deans?" mmm bigger turbo, HLM map, blue injectors, decat.... the list goes on!

I forgot last night but is there any chance next time I spin up to grab that spare manifold and have a got at porting it?

[WOODY T5]

yeah no probs mate

[leet5r]

yeah 14 is a good round figure , mines at 14psi and touch wood av had no probs. its been on about 6months and it ran a bleed valve before that which use to peaks at 21psi lol , 14psi on a 15g will feel very punchy a changed to a 16t and the power is the same but alot smoother with it
chhers hope this helps , also the end of the white on the boost gauge is about 20 iirc

[The Flying Moose]

yeah 14 is a good round figure , mines at 14psi and touch wood av had no probs. its been on about 6months and it ran a bleed valve before that which use to peaks at 21psi lol , 14psi on a 15g will feel very punchy a changed to a 16t and the power is the same but alot smoother with it
chhers hope this helps , also the end of the white on the boost gauge is about 20 iirc

Cheers Lee seems 14 psi is the way forward. When you mension the white on the boost guage I take it you are reffering to the manufacturers guage?



yeah no probs mate

Thanks smithness!

[leet5r]

aye m8 the volvo 1

[Rnash2002]

Welcome to the money pit that is modding lol,will give you 2 months before you want more power/speed.

[The Flying Moose]

Welcome to the money pit that is modding lol,will give you 2 months before you want more power/speed.

Two months! Sod that as soon as me and dean have sorted my gearbox and clutch bring on the very shallow money pit! I have to say there is a certain addiction im starting to feel already.

[JelT5]

Good man! MBCs are the dogs :D

[The Flying Moose]

Good man! MBCs are the dogs :D

04:54... What were you doing up at that time in the morning???

[JelT5]

04:54... What were you doing up at that time in the morning???

Hour ahead here so wasn't that early. Had to get up and feed the goat lol

[Santa]

Welcome to the money pit that is modding lol

Have to agree with that, it's like an addiction lol

[pjaystar]

where you that mbc from mate
i want one for mine

[The Flying Moose]

where you that mbc from mate
i want one for mine

I got it off smithness, if you PM him im sure he can point you in the right direction.

[Rnash2002]

where you that mbc from mate
i want one for mine
http://cgi.ebay.co.uk/MECHANICAL-BOOST-CONTROLLER-MBC-SUBARU-IMPREZA-WRX-STI-/290459981043?cmd=ViewItem&pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item43a0c394f3
Ive used one like that in the past,worked well.

[pjaystar]

rnash2002 i have one just like that and it made on difference and im sure i fiited it correct any ideas on why it wont boost over 10psi

[Rnash2002]

rnash2002 i have one just like that and it made on difference and im sure i fiited it correct any ideas on why it wont boost over 10psi
Could be a number of reasons,vac leak,weak actuator?

[scr8pdo]

I loved it after fitting an MBC, sorry I originally had a bleed valve, made a big difference, I found 14psi was good, I did go further but you get so far and the car cuts the fuel supply (I think) its like a saftey feature to stop damage but can be quite violent, give you whiplash lol, Rnash is right, you will be addicted and theres no end of mods you can do, I started on my old car with a mbc, then a remap, you just keep wanting more and more power, then i sold my car, but bought another and thats getting the treatment now