h kid

well just wanted to post my dyno graph just to see what you guys think. im happy with what i got other than the graph being very shaky, is that normal?

my set up
-straight t3 42-48
-log manifold
-big intercooler?
-"2" piping
-greddy type rs bov
-xs boost controler
-msd inline fuel pump with an fmu

this run was on 8 psi
[IMG][/IMG]
[IMG][/IMG]

PrecisionH23a

You are way too lean.

h kid

i am? the tunner guy sayd i was running perfect

sohc_turd

not bad for FMU. Get some decent fuel management then you'll really be having fun. It definately needs more fuel.

h kid

am i risking it though? i am building a b18b turbo set up know but i dont want to blow this thing up before im done with the other set up.

PrecisionH23a

Yes, you are risking it with running 13:1 under boost, that is not very safe. Don't take your car back to that "tuner."

If you want a quick fix, buy an adjustable fuel pressure regulator and start upping your fuel pressure until you get around a 11.8:1 to 12.0:1 a/f ratio.

h kid

what should my a/f be at? and yea i was going to take this thing to bubba but it was a spur of the moment thing.

redzcstandardhatch

at least in the low 12's to be safe. thats about double the stock power level...make it richer

PrecisionH23a

I just told you, between 11.8:1 and 12.0:1

If you are running stock static fuel pressure right now (44psi), my guess is you will need around 52-54psi to put you where you want to be at. You may also want to upgrade to a high pressure fuel rail while you are at it.

h kid

ok cool thanks, ill do that next pay check. but cant i just get bigger injectors to do the same? wouldnt that be better?

PrecisionH23a

Without getting too technical here... no and No.

MidShipCivic

JDM D15 vtec can fit d16 internals .

F20Cteg

D15B VTEC can only use D16 rods. The use of any D16 pistons will result in the piston sticking out of the block. D15B pistons have a super low compression height to allow the use of the longer D16 rods.

MidShipCivic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by F20Cteg &raquo;</TD></TR><TR><TD CLASS="quote">D15B VTEC can only use D16 rods. The use of any D16 pistons will result in the piston sticking out of the block. D15B pistons have a super low compression height to allow the use of the longer D16 rods.</TD></TR></TABLE>

I should've said that more specifically.

NJcoupe

the reason its making 199whp is cause its so lean.

but still its nice for a 1.5L

h kid

is it safe running it that lean? will it blow because of it?

093turbo16

iTrader: (2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by h kid &raquo;</TD></TR><TR><TD CLASS="quote">is it safe running it that lean? will it blow because of it?</TD></TR></TABLE>

No, not safe. Yes, can blow.

The tuner guy doesn't know what he is talking about if he said that is safe. Look at the spike right around 4K... that is where you will have problems...

Bigger injectors and some real management are in your future.

h kid

He was telling me to gap my plugs closer like at 30-32 and for all motor go for 40-45. is that true couse I've always thought the opposite

093turbo16

iTrader: (2)

He is closer on that one. I usually gap the plugs to around 28 for boosted applications. You want to close the gap down on the plugs, less chance of "blowing" out the spark.