We (www.rndauto.com) recently swapped a H22 into a 93 Civic for a customer (GAccord). We replaced the oil pump, water pump, thermostat, etc with OEM Honda parts, did the manual timing belt tensioner conversion, and installed the exhaust, VAFC II, LSD, clutch, flywheel, and several other aftermarket performance parts (see list below). After doing the swap we encountered several wiring issues within the HCP harness conversion. To add to our troubles, the ECU that came with the swap was chipped and not running correctly. We had a spare H23 P14 ECU and decided to try that on the dyno. We went to the dyno earlier tonight and tuned the car with the VAFC II. The engine turned out to put down some great numbers for the mods done. Note the H23 P14 rev limiter cam on around 6800 rpm. With the rev limiter raised or using a good H22 P13 ECU, we believe this motor could easily make more power.

The Setup:




1993 Honda Civic VX
1992 JDM Honda H22A Engine
Greddy 4-2-1 Header
OEM Integra Type-R Intake
APEXi V-AFC II
AEM Fuel Rail
B&M Adjustable Fuel Pressure Regulator
NGK Spark Plug Wires
Bosch Platinum Plugs
Walbro Fuel Pump
Invidia Exhaust
ACT Pro-Lite Flywheel
Exedy Clutch
Quaife LSD
Hasport Mount Kit & Axles


The Results:





More info... http://www.rndauto.com/tom.htm


Modified by ranta18 at 4:28 PM 1/22/2005

 

no vtec?

 

I was wondering the same thing. There should be a dip/bump right around 5250 rpm but then again that could be b/c of the p14 H23 ecu he is using.

 

I see a jump at 4700.

Maybe they were able to control that with the vafc2 ?

 

Yup, use the p13

 

seems like a sohc vtec H23 diagram :-)

 

I wonder if you would lean a bit (to 13,5AFR) in the 3k- 4,5k area, it would help to strighten the torque curve there? I don't like the dip there.

 

use the p13.....my friend is using ls ecu on his ls/vtec and it blows!....we got vtec wired threw a switch till we find a p28 tho, so its not bad...

 

just make the vtec sounds till you get the ecu, youll be fine.....

 

185whp at 6800 isn't bad at all... You still have several hundred rpms to make power...

 

A $1000 LSD for this car? That seems a bit unnecesary...

 

The P14 ECU is running the car and the VAFC II is controlling the VTEC like it would with any ECU. We had to take out fuel with the P14 ECU as it was running VERY rich. Fuel correction ranged from -20% down low to -7% up top. The A/F is where we want it for a daily driven car. The P14 should run the car just fine. He could raise the rev limiter or get a P13 and re-dyno tune.

jnet - That much TQ in a 2200 lb FWD car and you'll understand why

Correction - The harness was done by HCP, not Hasport.

 

i never knew vafc2 could activate vtec with a non vtec ecu...

thats a damn good number for those mods especially going to only 6800 rpms...

 

ya nice #'s but i have a few questions...

i thought the vafc changes the rev limiter, so y u stop?

and don't you think the timing is waaaay different especially when your on the high cam. from what i understand the vafc isn't user adjustable.

also when do the secondaries open? possible cause of the tq dip?

if you would have a had a good p13 id say use it, but since he needs one anyway, i suggest a p72 or i hear a p28 can be modded to control secondaries, either w/hondata s100 system can be had for less then the the cost of that vafc, sell it and buy that...id love to see the results it has on a motor like that

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fastludeh22 &raquo;</TD></TR><TR><TD CLASS="quote">ya nice #'s but i have a few questions...

i thought the vafc changes the rev limiter, so y u stop?

and don't you think the timing is waaaay different especially when your on the high cam. from what i understand the vafc isn't user adjustable.

also when do the secondaries open? possible cause of the tq dip?

if you would have a had a good p13 id say use it, but since he needs one anyway, i suggest a p72 or i hear a p28 can be modded to control secondaries, either w/hondata s100 system can be had for less then the the cost of that vafc, sell it and buy that...id love to see the results it has on a motor like that</TD></TR></TABLE>

Since when did V-AFC change the rev limiter?

Secondaries would open at 4800 instead of 4600. It's obvious to see on the dyno VTEC is being activated without enough air and chokes until 4800 when the P14 secondary control kicks

I agree with the timing.

Also, a JDM H22a will peak hp at 6800-7000 anyway with no cams

 

Thanks for sharing the dyno with us. My hybrid's power peaks about there... just 2 whp less, but my midrange makes up for it. How's it going with the DPR partnership?

Pirate

 

The VAFC can not adjust the rev-limiter

The secondaries are open before 4800. The low cam is just not making anymore power past 4500-4600. VTEC was at 5000 and there was a LOT larger spike when VTEC came on. It was lowered to 4700 and made things much nicer.

I agree it wouldn't make power much higher in the rpm band (maybe up to 6900-7000), but I do think it would make some, whether that be 1 or 5, its still more.

How different are the timing tables between the H23 and H22? I am going to pull them up on a AEM EMS to know for sure later on. I will let you guys know what I find.

 

Hey could I get a screen shot of those tables? I am running some weird modified p28 for ignition and have never actually seen that H22/H23 tables. PM me please.

Pirate

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ranta18 &raquo;</TD></TR><TR><TD CLASS="quote">The VAFC can not adjust the rev-limiter

The secondaries are open before 4800. The low cam is just not making anymore power past 4500-4600. VTEC was at 5000 and there was a LOT larger spike when VTEC came on. It was lowered to 4700 and made things much nicer.

I agree it wouldn't make power much higher in the rpm band (maybe up to 6900-7000), but I do think it would make some, whether that be 1 or 5, its still more.

How different are the timing tables between the H23 and H22? I am going to pull them up on a AEM EMS to know for sure later on. I will let you guys know what I find.</TD></TR></TABLE>

whre did you find h23 and h22 ems cal files? i'd like to see them too

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ranta18 &raquo;</TD></TR><TR><TD CLASS="quote">
How different are the timing tables between the H23 and H22? I am going to pull them up on a AEM EMS to know for sure later on. I will let you guys know what I find.</TD></TR></TABLE>


they are very different.
4 to 8 degrees different across most of the map actually, with spikes of over 10 degrees in some areas.
the h23 has more retarded timing overall by a lot.

 

That's some pretty good power.

Also, did you guys think about removing the balance shafts while doing the swap???

Please redyno it with a p13 and quite possibly without balance shafts(if you decide to), nice numbers nonetheless.

 

Joel,you right,this timing

P14 ECU have timing for 6500-7000rpm only 23-24 degrees for full throttle
p13 ECU around 29-30 degrees

 

Well if those timing numbers are true, its not hurting the motor the way it sits. He could gain some by advancing the timing a few degrees. Maybe set it at 17-19 degrees.