i have a JDM 2nd gen B16a in a 00 EK;
mods:
ITR manifold, AEM CAI, 5zigen header, 2.5 carsound cat, 5zigen catback exhaust, CTR cams w/skunk2 gears, FPR

now i dynoed at 139whp and 99tq and i think thats **** if you ask me because i spent maybe 2k worth of **** and i see people here with stock b16s that have higher numbers than i do, wtf??? at the time i was still running on DX fuel pump, but can that really cause such a drastic loss in power??? oh by the way i run 15.2 at the track with full interior on street tires. i dont know if it matters, but my car was dynoed with the ones that "attach to the hub" unlike "wheels to rollers"

 

try tuning it, 15.2 thats like a stock 92-95 si (15.5) i think thoughs are low hp's

 

i had the fuel sort of tuned with the FPR, but i do know that i had timing and cams tuned with the gears at the dyno

 

is that 100 shipped on the fuel rail

 

well....on my car( civic si b16a2....i/h/e) the first few dynos were done on one day and the last run was done on a diff day...same exact mods temp and everything....they even retarded my timing a bit on the last run....the difference was that on the first day i left the silencer in ....let it sit..then while it was off reset the ecu and immediatly went on the dyno...thats when i hit the low runs....then the last run i went to the shop with the silencer in but when i took it out i ran the car on the street after i reset the ecu..then went to the dyno..thats when i improved 16hp from the first run...i dynoed once again after that with 1 ctr cam and i hit 170hp at autolink..i drove the whole way without the silencer in just so i would be sure it was ok....just a personal experiecnce of my fluxuating numbers

 

ugh, 129 hp and 100tq does NOT justify me spending the $3500 on a b16. thx for the post dude!

 

before i dynoed my car, i estimated and added up all the hp i would be getting from my parts and i had thought around at least 20-30 more hp, but thats not what happened, instead i find out that my motor barely meets the standard at 139

 

You should be sitting around 150-155. What ECU are you running?

 

00 SI ECU umm P2T ECU i think

 

Definitely go with obd1 and have kenji make you an ECU... that made a world of difference on my b16a2. I have similar mods to you, my time is in my sig and its a heavier coupe.

 

im wondering if my fuel pump could have been the problem because i was running the DX sohc one when i dynoed, but now recently have put a b series pump in

 

If you made up 10-15hp with the fuel pump, you would certainly feel the difference. So did it make that much of a diff with the new pump?

 

i felt it when i put the new pump in, top end pulled alot harder. also i was using a DX fuel hose when dynoed and recently changed that with a bigger SI one as well and it too makes a difference

 

That's probably part of it. Also, what are your cam gear settings?

 

i dont remember because i lost my dyno sheet with the cam settings

 

what else can cause such a loss in power??? im just hoping i dont have one of the weakest b16s in the world

 

done a compression test?

 

i havent done a compression test yet, i think the JDM b16a is suppose to have like 250, correct?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xhatchracerx &raquo;</TD></TR><TR><TD CLASS="quote">i havent done a compression test yet, i think the JDM b16a is suppose to have like 250, correct?</TD></TR></TABLE>

250 is pretty damn high, but anything above 200 in all cylinders is good.

 

Either you had a weak B16 before or adding all the bolt on's without knowing how they should be set has caused more harm than good. Your stock DX fuel pump should be fine for your mods. While it may be better to upgrade to a DOHC fuel pump it's not gonna make that much of a power drop in your car. I hit 151 hp with a I/H/E B16 on a stock 140k mile VX pump. Like he said do a compression check.

 

damn you guys have some really low torque numbers . if i were you i would do a compresion test and a leak down test. sounds like your motor isnt up to par. just my $.02

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xhatchracerx &raquo;</TD></TR><TR><TD CLASS="quote">im wondering if my fuel pump could have been the problem </TD></TR></TABLE>

post the plot and the A/F so we can actually help you.

what the hell does "kind of tuned" mean anyway ?

 

b16's were never torque motors from the jump so dont everyone get all nervous. Your problem lies, like someone else said before, in the fact that you are using an ODB II computer and setup which is more restrictive. Change over and you should see your numbers looking more like everyone else.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slow_a$$_eg &raquo;</TD></TR><TR><TD CLASS="quote">ugh, 129 hp and 100tq does NOT justify me spending the $3500 on a b16. thx for the post dude! </TD></TR></TABLE>

I hate to tell you but 129whp is not the norm for a b16 with bolt-ons, it should be in the 150whp range, and if you paid $3500 for a b16 swap, I hope they used lube when they F**cked you.

 

Yikes. That is low for your mods. I dyno'd with 101 and 100lbs of tq on my 96 EX, and that was just with AEM CAI.