10.5:1 endyne Pistons at .020 over, Eagle H beam rods, stock cam (y8) at stock timing, skunk2 springs and ret's, Skunk2 10k rev programmed p28 (mad fuel and Xover at 5600)

all on a 99 y8 block and head, 3rd gear, no A/f read (their **** was broke) at sea-level in humid weather (hawaii) fuel psi @ 45 WOT

Compression is all normal in spec.

 

Id say you have a SERIOUS problem. most d16z6's with bolt ons will dyno around 120whp. Did you tune it at all? I'm going to assume you have bolt ons. I would guess that either A) your valves aren't seating properly or B) your piston rings aren't properly sealed.

Is that a dyno jet?

Did you to a compression test yet?

 

Comp was fine, and the head is fine... I am guessing it has to be because of that p28 program... it is meant for a B series and I was only running it for break-in purposes only (fuel).

Still, that is wierd how it drops off at xover

 

something is seriously wrong here

 

yeah... that's not right at all.... a STOCK y8 will dyno those numbers.

the fuel pressure does seem kinda low @ 42psi at WOT.... it should be about ~45psi @ idle...

 

yeah i know... but the fuel pressure is fine... idle stock is around 38 and WOT is around 43 for the Y8's so I don't think that is the issue... the injectors are stock GSR's (same as civics) and fed by AEM FR, FPR and a jackson racing intank 215lph... its gotta be their dyno and no extra help from that monster of an ecu program...

 

yeah.... perhaps... also, i just noticed that the tq and hp lines dont cross at 5252 rpm like they should... very strange

 

What's your a/f ratio?

 

see top post

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by soccaian &raquo;</TD></TR><TR><TD CLASS="quote">yeah.... perhaps... also, i just noticed that the tq and hp lines dont cross at 5252 rpm like they should... very strange</TD></TR></TABLE>

Yeah they do.... you aren't reading the graph right...

 

looks like right where your X over 5600 for your chip in that P28 prob dumped too much fuel

also is your vtec working?

 

seems to be... I mean, granted I have CAI and 4-1 header but I still really can't hear x-over but it feels like it is fine... The graph shows it to be working...

Yeah, the fuel dumped at xover I am sure is meant for a B-series, so that alone would be enough to cause it to fall on it's face..

 

hey man i think you are running way too rich up top.with that bump in comp ur power curve should move up to about 5-6k and instead its falling on its face.check ur plugs to see if they are fouled and or if you are running way too rich.alot of fuel will make ur car slower.thats why lean motors make more power but then can also blow.and also check ur cam timing

 

yah, thats what I been thinking... I have kinda always stuck with "the leaner the meaner" theory, just ran this rich *** program for a good break in ...