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+--- Thread: questions on front mount boost (/showthread.php?tid=28915)
questions on front mount boost - philpemberton94 - 25-01-2015
Eventually got round to fitting my fmic the other day, all went well execpt i am now reading 16 psi on full chat, which was wastegate pressure after the pump tune, instead of 20 on a mbc with the top mount, it seems to pull just aswell if not better with the 16 psi and fmic but is it normal to see a drop in psi?
I am fairly sure i have no boost leaks as i have checked many times, but not ruling it out.
Cheers
RE: questions on front mount boost - Jimbo - 25-01-2015
You will see a slight lower boost pressure as the area to fill with boost before it actually gets down the inlet is larger.
Id expect it to be making the same if not more power even at 16psi due to the denser air
RE: questions on front mount boost - philpemberton94 - 25-01-2015
Right that makes sense, yeah definetly pull as well/bettter with the fmic, would it make sense to turn the boost up or leave it to be safe with it being denser?
RE: questions on front mount boost - Tom - 25-01-2015
You have a boost leak.
RE: questions on front mount boost - Jimbo - 25-01-2015
Turn it up yeah, mine dropped a few psi when i went fmic
And i didnt have any leaks
RE: questions on front mount boost - Piggy - 25-01-2015
Shouldnt see less boost.
Boost leak be my guess.
Use a strong solution off fairy liquid/water in a spray bottle and check all the joints
RE: questions on front mount boost - philpemberton94 - 25-01-2015
Ive tried the fairy liquid method and found nothing, also cant hear anything?
RE: questions on front mount boost - Paul_13 - 25-01-2015
I saw slightly less boost going from top mount to front mount
RE: questions on front mount boost - simonh - 30-01-2015
I always thought that as the temperature of the air dropped so did the pressure, that's why 30 bhp of boost from a standard turbo doesn't really give any more power than 25psi? (the pressures are mostly just higher because the air is warmer, it doesn't actually force much more oxygen into the engine)
RE: questions on front mount boost - Mattcheese31 - 30-01-2015
Cold air is denser than hot.... Don't know how that might lower pressure though