Power Reading Low With All These Mods

[RamR33]

Hey guys got my car dynoed but power was way lower then i expected..

Mods are.

full 3inch exhaust, bellmouth dumpipe and hiflow cat

FMIC

550cc injectors with 040 fuel pump

greddy style plenium with 80mm throttle body

Pu hiflow turbo

new coil packs

3inch intake with K&N pod filter

z32 afm

greddy e-manage

aftermarket b.o.v plumped back

running 9.5 psi

made 185rkw

does that sound about right?

mechanic said i need adjustable fuel pressure regulator cause its just starting to lean on that boost...i did have a problem with my afm as the soleder joint one of them was loose but dont think that causes leaning out...

wat do you guys think? or do i neeed just to run heaps of boost like 17ps/18psi for it to come alive with all these mods and the turbo is a .82?

Edited November 9, 2011 by RamR33

[markdem]

check compression

[jrm]

I got 182.7rwkw with a 3" turbo-back exhaust, Blitz FMIC & K&N Panel filter on my R34. Boost peaked out around 8psi in the midrange, trailing off to 6psi.

Your power sounds incredibly low.

[DVSTRK]

Every dyno will show a different figure. As long as it feels like its been tuned well and its performing nicely on the street, dnt get to stressed about the kw reading.

[RamR33]

yea alot of people say the dyno is a low reading,as if i went to another id probally get in the 200rkw mark,but with the mods i have there not gonna come into effect on that low boost like fmic,and bigger injectors and all that,plus i think it was more a power reading then a tune..i tryed it on 11/12 psi just to see and omg wat a difference as the turbo comes alive/car but im thinking its the tune it needs bad and i only payed $150 lol so dnt think it was a tune and with all those mods you would think it needs a mega tune to get it right not just 1 hour on the dyno lol....

i just think with the mods it just needs the boost winded up to get its power cause dont think anyone would go out and spend 10k and run 9psi lol

see how i go on next dyno on 15psi or so with a full tune!

[mad082]

if it's leaning out then that will be causing the low power reading.

dodgy afm solder joint could be causing the leaning out if it isn't reading properly

if you have an 040 pump and 550cc injectors it sure as hell shouldn't be running out of fuel. it either needs a better tune or if the tuner can't get enough fuel without a FPR then there is something wrong in the fuel system. either the fuel filter is very blocked, one of the injectors is blocked or the pump is shagged (most likely cause).

having said that, 9.5psi through a highflow turbo isn't that bad, especially if it has a .82 rear housing. you may find that running 3 or 4psi more boost puts it up into it's effeciency range more and it starts making more appropriate power for the mods. but the first thing i'd do is solve the leaning out issue.

[RamR33]

the afm was bad like i dnt no even how it got that power figure,it was cutting out on me bad like wen the afm was running up and down it would cut out and thought it was my coilpacks and spark plugs but was the solder joint coming loose wen it would heat up and since then never had a problem again,im about 90 percent on the leaning part coming from there cause like u said its getting enough fuel unless he got no clue on tuning lol