My dyno tune with DH head and vafcII (pics)
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Rep Power: 787 My dyno tune with DH head and vafcII (pics)
Well here it is five months later. Really don't know what to say, and I feel like I should cry now. Can anyone explain what happened here, because I hope I didn't lose power after all I put in. This should be a reminder to everyone--mods don't work on our cars.
I had the vafcII tuned at garage qwai in Chicago, and I highly recommend them for tuning and other stuff. Really nice people and they gave my stupid civic just as much attention as a good car. One hour of dyno tune cost me $120. Basically it helped at least to smoothen out the a/f ratio.
ps. Josh you and your company suck! What a disgrace. I hope you never make anything for the D17 ever again.
MODS:
-NGK Iridium Spark Plugs
-Ground Wire Upgrade
-Sun Hyper Voltage System
-Apexi VAFC-II
-Optima Yellow Battery
-Ceramic Header
-DH Racing Ported Head Work
-B+M Transmission cooler
-Thermal Rear Section Exhaust
-Napa Gold Air Filter
Also, I have a small system (one sub) and 15 inch wheels. Yes the car does feel smoother when accelerating. Does anyone have a stock ex dyno to compare, since I only did after. The two runs are before tuning with mods, and then after adjusting the fuel. So basically the vafcII gave 2whp. I guess the head gave 0whp or possibly negative hp.
VAFCII tuning numbers: They only tuned the wide throttle, because the others were already pretty close. I have an auto, and they ended up using 2nd gear because 3rd didn't work well.
Also, they set the vtec to engage at 2800rpms, but I put it back to stock. I don't know exactly how the vtec works, but someone said you need 100% throttle to activate it and turning it on too low is bad (not enough oil pressure).
Wide High Vtec
2600 +4
2700 +4
3000 +4
3400 +4
3600 +3
4000 +3
4400 +3
4800 +3
5200 +3
5800 +3
6400 +1
6900 -2
vt cont (put back to stock ****)
L-->H 2800 rpms
H-->L 2700 rpms
Throttle
25% narrow, 80% wide
I had the vafcII tuned at garage qwai in Chicago, and I highly recommend them for tuning and other stuff. Really nice people and they gave my stupid civic just as much attention as a good car. One hour of dyno tune cost me $120. Basically it helped at least to smoothen out the a/f ratio.
ps. Josh you and your company suck! What a disgrace. I hope you never make anything for the D17 ever again.
MODS:
-NGK Iridium Spark Plugs
-Ground Wire Upgrade
-Sun Hyper Voltage System
-Apexi VAFC-II
-Optima Yellow Battery
-Ceramic Header
-DH Racing Ported Head Work
-B+M Transmission cooler
-Thermal Rear Section Exhaust
-Napa Gold Air Filter
Also, I have a small system (one sub) and 15 inch wheels. Yes the car does feel smoother when accelerating. Does anyone have a stock ex dyno to compare, since I only did after. The two runs are before tuning with mods, and then after adjusting the fuel. So basically the vafcII gave 2whp. I guess the head gave 0whp or possibly negative hp.
VAFCII tuning numbers: They only tuned the wide throttle, because the others were already pretty close. I have an auto, and they ended up using 2nd gear because 3rd didn't work well.
Also, they set the vtec to engage at 2800rpms, but I put it back to stock. I don't know exactly how the vtec works, but someone said you need 100% throttle to activate it and turning it on too low is bad (not enough oil pressure).
Wide High Vtec
2600 +4
2700 +4
3000 +4
3400 +4
3600 +3
4000 +3
4400 +3
4800 +3
5200 +3
5800 +3
6400 +1
6900 -2
vt cont (put back to stock ****)
L-->H 2800 rpms
H-->L 2700 rpms
Throttle
25% narrow, 80% wide
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Rep Power: 323 man gearbox this is a bad month for you ... first Michelle Branch gets married your S&B filter didnt work to much and now this .....
you need some boost in your life i hear its wonderful
you need some boost in your life i hear its wonderful
Last edited by ledbelly; 10-16-2004 at 09:51 PM.
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Rep Power: 787 I feel bad because I spent soo much time and money all for nothing. Well maybe my car is slower than stock now. Who knows. Whatever, I'm done with this crap. I'll get the header jet coated next year cause it's falling apart, but that's it.
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Rep Power: 559
Originally Posted by gearbox
I feel bad because I spent soo much time and money all for nothing. Well maybe my car is slower than stock now. Who knows. Whatever, I'm done with this crap. I'll get the header jet coated next year cause it's falling apart, but that's it.
u got this head ported and all, increased the flow and what not, but didnt increase much of anything really, u got this big open head with nothing to help the air move through it. i still feel sorry
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Rep Power: 0 tru tru tru man, you got nothing getting air there, and nothing getting it out, rear section exhaust, cat, no intake (that i saw).. man, your head can flow like mad, but it has nothing to flow!!!!!!!! ported head on SOHC is mainly for boost.... no other real reason due to lack of airflow, you arent going to gain much power just with the head... man, i know cat gained BIG power, and mine is on the way, so i will hope to as well.. but for real man, you need to have something to flow the air through it to see the gains ...
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Rep Power: 0 yea dude. Auto robs u of power from mods, and just in genereal. GEARBOX!! U live in IL? I live up in Lake County, Mundelein...u near there?
p.s.- If your gonna tune ur civic, go to Whip Factory. They specialize in Honda/Acura
p.s.- If your gonna tune ur civic, go to Whip Factory. They specialize in Honda/Acura
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Rep Power: 325 I would have thought it was higher, you might have gained some over stock, but yeah they are right, without an intake/custom down pipe/high flow cat/custom mid pipe you'll never push all of that extra air in and through
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Rep Power: 267 It's a D17 and designed for economy.
Regardless of mods you will make very little hp or torque.
Sorry to see this but sometimes when you change how an engine is designed (port job) things just don't work the same or the ECU is not sure what is going on.
TIME FOR A SWAP
Regardless of mods you will make very little hp or torque.
Sorry to see this but sometimes when you change how an engine is designed (port job) things just don't work the same or the ECU is not sure what is going on.
TIME FOR A SWAP
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Rep Power: 0 OK I have to agree that you need a new cam to get more air flowing threw the head. A cam will give you higher lift and longer duration on the valves. Maybe if you do a short ram intake and a catless exhaust with a free flowing muffler you should do a little better.
BUt to be honest I would go boost or part out the head and sell it to someone who wants to boost.
Here is a pic for you to compare. The bottom run was my base dyno before turbo. My base looks identical to yours with PnP head. SOmething is wrong.
BUt to be honest I would go boost or part out the head and sell it to someone who wants to boost.
Here is a pic for you to compare. The bottom run was my base dyno before turbo. My base looks identical to yours with PnP head. SOmething is wrong.
Last edited by guns; 10-17-2004 at 02:45 AM.
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Rep Power: 0 There appear to be three explanations for the low numbers. 1) DH did excessive porting and f****ed up; 2) he needs to modify intake and exhaust (and cams) for better NA flow to realize gains from P&P; and 3) P&P only works when boosted. A fourth view is that the D17's ECU is programed to cancel out benefits of minor mods. I'm not an expert, but if #1's the cause then #3's prolly the only solution (boost). I'm hoping its only #2 in which case the project isn't done and shouldn't be abandoned. Good luck gear.
Last edited by obguam; 10-17-2004 at 07:53 AM. Reason: Mispelling
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Rep Power: 787 Thanks for the comments everyone. It looks like I'm heading towards boosting it in a few years, since this is a car I want to keep. Just run low 4psi or something to get some good gain.
To the other turbo auto guy...you only got 150 hp at 8psi? That doesn't seem right either. A manual gets what like 180 or something?
To the other turbo auto guy...you only got 150 hp at 8psi? That doesn't seem right either. A manual gets what like 180 or something?
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Rep Power: 487
Originally Posted by gearbox
Thanks for the comments everyone. It looks like I'm heading towards boosting it in a few years, since this is a car I want to keep. Just run low 4psi or something to get some good gain.
To the other turbo auto guy...you only got 150 hp at 8psi? That doesn't seem right either. A manual gets what like 180 or something?
To the other turbo auto guy...you only got 150 hp at 8psi? That doesn't seem right either. A manual gets what like 180 or something?
#27
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Rep Power: 787 The head was ported alot, which may be worse. And it has hi flow valves as well, so I bet it would really help with turbo. But then again, I don't really have the money to pay for a huge turbo and then run a few psi of boost so the tranny doesn't go out. Maybe I should buy those instructions for the home depot supercharger and make my own
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Rep Power: 305 yeah you gained some HP for sure, probably around 20% from stock (since you are basically cancelling out drivetrain loss). i wouldn't be so rough on yourself. only way to really know is make an auto to manual conversion your next mod
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Rep Power: 0 man, so sorry to see that dyno ... When I showed the pics of the first DH head to the machine shop that ported mine, they said that head must have been for a HUGE turbo project ... said the ports were massive and that the majority of a P&P on a N/A car gets done inside the head, not to the ports ... Since my head and cam go in Wednesday, I am glad to see that the A/F controlled by the VAFC2 seems to work out about right, although with that power, you shouldn't need much ... Ohh well man ... Glad you got it on and I think that with some other things, i.e. cam work, that you'll be able to really add to that ...
#30
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Rep Power: 787 Good luck with the vafcII. It looks like they got the ratio linear, even though it's only around a 2% correction at full throttle.