was on a dynapack here in u.k on my ek4 (b16a2)



my setup

b16a2
bc3+ cams - intake advanced 2 deg and ex retarded 1 deg
toda gears
rm gen 2 springs/retainers
spoon 4-2
ek9 2-1
test pipe
fujitsubo RM-01A
spoon headgasket
comptech icebox
apexi power fc
ek9 t/b
ek9 i/m
hondata gasket

baffled why it peaks so low but fc commander shows inj duty at 100% which i guess is prob with fueling somwhere then. no idea about tech stuff etc so opionions and advice appreciated

 

thats a good bit of torque
especially from a b16

your car should be making more HP based on the mods listed. u might wanna work on your timing maps, upgrade injectors, and increase rev limit.

after doing the IM/TB and the header and exhaust, my power peaks~8000rpm on a stock set of cams...

 

There is so much tuning that is left to be had in that motor it's unreal. Your torque curve is all over the place man, you need to have some serious tuning done with your fuel. As for the peak numbers, I personally have never seen a BC3+ make power past 8k. They have a very nice mid-range, but they are not a top end camshaft at all. Good luck

 

had itr cams previous which peaked just over 8k. different dyno and mods done since then so cant compare.

its pointless me raising limit at the mo as peak is so low. i expeceted bc3+ to peak around 8K just like itr cams and had rm springs retainers fitted as was intending to raise stock 8300 limit to about 8500-8600 for fun more than anything and keep me in powerband when i shifted.

power fc was setup by supposedly very good tuners but they mainly tune supra's and skylines so honda knowledge is lacking a little.

 

I'm not gonna name names, but there is a place that I know of that builds AWESOME turbo cars. Like, daily driven 10 second hatches. Anyways, they can tune a turbo car to no end, but they can't tune a n/a car for ****. They dump a whole buncha fuel at it, and retard the ignition timing. This has happened on a few motors that I have seen come outta that shop, people needed to change there spark plugs every 3k because it's runnin so rich. I'm not sure why you couldn't tune a n/a car, but tune a turbo car. I might try and find a reputable n/a tuner, maybe even drive oout of the state to have it done...I think thats what I'm gonna hafta do

 

well you wanna come to u.k, good tuners are almost non existent here

 

why dont u just post up your timing and fuel maps

 

dont have any but requested them and will post when/if i get em. daft question but what can be read from them ?

 

nothing

more info on the dyno makes aqlot of things easier to understand.

what was the air fuel ratio on the final tune, and what octane gas are u running?

 

no idea what a/f ratio was. theres section in corner of my dyno sheet that has ratio 4.400 if that means anything

im runnin 95 octane. can get 98 here

 

oh damn you're in the UK!? Sorry man, good luck with that!

 

thats high octane, u might wanna take a hard look at your timing maps, i would assume u can run upwards of 36 degrees up top on that motor, but who knows!~

only dyno tuning will tell

 

I think your hp is a little low. Those BC3 need high comp to get good numbers. Maybe some high comp pistons. just my 2 cents

 

whole point of me changin itr cams for bc3+ is they supposed to be real good on stock comp. did throw spoon headgasket in for few extra points

 

PowerFC is more than capable. However - it sounds like you're running way too rich.

You have got to get a wideband or find someone with a wideband to tune the car. It's pretty obvious that it's untuned right now.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by clayne &raquo;</TD></TR><TR><TD CLASS="quote">PowerFC is more than capable. However - it sounds like you're running way too rich.

You have got to get a wideband or find someone with a wideband to tune the car. It's pretty obvious that it's untuned right now.</TD></TR></TABLE>

readin up this is almost definately the case. the thing that pisses me of is i just had the fc fitted and supposedly tuned. well thats what i paid good money for but looks like i paid for ****. gonna go back to get it looked at. i have a feelin theyve messed up with injector settings . u.k is for findin good tuners

 

DIN numbers are usually lower than SAE numbers. See if they have a conversion then you can compare to US numbers. Why didn't you try Kent Cams they make several diff. and custom versions. the 4.4 number is your final drive ratio.

 

The thing is - you have to seperate "mail-order tuned" from "hand-tuned" when it comes to PFC. If they tuned it beforehand based on mods you told them and then sent you the PFC to plug-in - forget about it unless the dealer is very familiar with PFC settings on B-series engines.

What you should do is find an FD/RX-7 tuner/shop. They will be familiar with the PowerFC. The PFC can do everything you need it to do - you just need a wide-band O2 and FC-datalogit (if you want to do it yourself). That's about 600$ total if you buy FCDL and an Innovative wide-band. But then you can tune the car on the street to get it roughly in range any time you want.

There's no way you should be hitting 100% INJD. Have someone drive behind you and tell you if your exhaust has black smoke while on the throttle hard or check your bumper for black dust/soot etc. These are tell-tale signs of richness. An even more obvious way is to just pull the plugs and look at them.


Modified by clayne at 5:58 PM 2/17/2005

 

they did use datalogit software and had appropriate sensors all connected while it was setup on a rollin road. i have no idea what im doin but tried following just now

all inj are set to 100% accordin to commander so i set them to 86%. at 8000 rpm inj duty was only 88% compared to 100% at 73xx rpm before. gonna go back to tuner to get it setup right

 

Do NOT do that unless you absolutely know what you're doing. You're effectively leaning the engine out and if you lean it out too much it will detonate way too often.

As of right now set it back to what it was and pull the plugs out so we can tell just how rich you're running.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vti444 &raquo;</TD></TR><TR><TD CLASS="quote">
power fc was setup by supposedly very good tuners but they mainly tune supra's and skylines so honda knowledge is lacking a little.</TD></TR></TABLE>

Did they use the Apexi Power Excel software to tune? If not, you need to find someone who uses that (or get a Datalogit).

 

They used datalogit.

But the car definitely needs to be retuned.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by clayne &raquo;</TD></TR><TR><TD CLASS="quote">Do NOT do that unless you absolutely know what you're doing. You're effectively leaning the engine out and if you lean it out too much it will detonate way too often.

As of right now set it back to what it was and pull the plugs out so we can tell just how rich you're running.</TD></TR></TABLE>

thanks for the heads up, ill set back to 100%.

would you be able to tell how rich its runnin from a/f graph ? hopin to have copy weekend

 

Only if the gauge is accurate.

But just pull the plugs and look at em.

 

k, ill try and do that tommorow and take some pics. fitted new oem set about 2 months ago