Hello , i am from Austria and i have a Problem with my Custom Hytech Header for2.0

I have buy the Header by Larry, Endyn, only I have a hole with the Dynoshet and do not point why please around help


Setup N/A B18 Sleeved to 2.0

AEBS Block , with Endyne Bumpstix, Endyne rollerwaves , Catback Tanabe.........
Custom Airbox with Legend K&N AIr Filter




http://img522.imageshack.us/my...9.jpg

here the Photo from my Engine withe the Header







Modified by ACCORD 1 at 3:59 AM 10/3/2008

 

here you go.

maybe someone can help you with the dip

 

I think you should first talk with Larry at Endyn, since they have alot of experience with tuning the Hytech headers and also with John at HyTech.

 

this is from John Grudynski"hytech"


It could be many things. Since I did not build the motor I can not say what is the issue. You will have to figure that out yourself.

John Grudynski
HyTech Exhaust Inc
12 Hammond Dr. #203
Irvine,CA. 92618 USA
(949) 581-2181
hitechexhst@earthlink.net
http://www.hytechexhaust.com
http://www.rsx-tuners.com

 

this could help, maybe set vtec sooner, maybe your motor was peaking power on the primary cam lobes .. so try vtec where the loss of power was

 

now vtec is with 5000, if you have had this problem?

 

YA JOHNS NEVER TO MUCH HELP................... HIS HEADERS ARE GREAT BUT OTHER THEN THAT HAD A MOTOR OF MINE FOR OVER A YEAR AND DID NOTHING BUT BULLSHIT..

 

What did you use to tune your car with? More details would help.

 

Retard your exhaust cam

 

hmm...it seems like the dip when vtec engage in normal...we ran hytech headers on our street car and its has the same dip when vtec e ngage. if this is a race car then lock your vtec and the problem would be solve....but honestly its normal for vtec to dip......maybe you should try a different header setup and see if the problem is still occurre if not then, maybe its just the header how the ruuner is setup...or your build might not be a true 2.0 liter build....

 

You make comments like this but you cant decide whether to use a certain VT in your motor. What the hell is going on around here.

 

It is good to see someone from the neighborhood with similar results.

 

I have owned 2 Hytech headers, which I have used on 2 totally different setups and I don't have that kind of dip on either. First header was a standard 1.8 header I got together with his exhaust system for my B18C6 (EUDM ITR) and the second header is a big tube custom for my 2.1 build.

I think a good tuner can help you with that dip, he may not make it dissapear but at least smooth it out a bit.
Here's a pic showing my dyno results, you should be able to get it as smooth as this with good tuning. VTEC is set at 4500 and 6800 on those 2 motors shown there.

 

if you ask for why.. Why not use it?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mar778c &raquo;</TD></TR><TR><TD CLASS="quote">Retard your exhaust cam</TD></TR></TABLE>

Do what he says.. damnt.
A Dip is usually a sign of imbalance of something is throwed off.. Whether its vtec set too high or low, to where your not maxiumizing your power.
It could be the fact that your game gears are not dialed in correctly?
Maybe your tuner can't tune..

 

Show the torque curves

 

that custom airbox looks sick.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SMSP &raquo;</TD></TR><TR><TD CLASS="quote">Show the torque curves</TD></TR></TABLE>

No problem, but take a close look at the scaling of the chart before complaning about the curve beeing all over the place. I get it every time I post this...
This is just how the Dynapack prints the charts. It's also in Nm, so you guys will have to do a conversion to get it in ft/lb. The peak around 3.2k is due to the Mugen intake I believe, I have seen similar on other ITR's with this intake. The curves are somewhat similar, I used the same intake/IM and the same Hytech 2.5" exhaust, but everything else has been changed between the 2 setups . One motor is 81x87.2 and the other is 85x92.

 

Well you still have some of that 6k dip.

 

I dont now who is the Problem

 

Yes, on my stock engine there's a dip in the torque right before 6k (but only 5Nm, that's like 3ft/lb), but not on my 2.1 build. Stock motor only had 2 hours of VAFC tuning done, we spent a little while longer getting the PowerFC tuned on the big motor. But, hp is not dropping off so it's not nearly as bad as OP's motor.

Question to OP : What's happening with the air/fuel ratio in that part of the rpm band? I remember my tuner spent a good bit of time trying to smooth out the torque curve as good as possible, engine liked a little different A/F ratio in different parts of the rpm band. Also, are you postive the cams are degreed correctly? if one of them is a couple of degrees it it will not do any good.

 

what is VTEC set at?.. Have you tried to lower it?..

 

why are you doubting me....This VT is for my personal build...I know what I have for the street power car.....I saw a awesome killer deal on omni power VT and I asking for other folks opinion. I know what that VT setup I'm getting already.....I figure if omni power was so cheap, I want to know the pros and cons.....you can't even answer my question....so what do you think huh???? We can bumb head all day long but I chose not to...simple question and you make it such a big deal..... READ THE QUESTION BEFORE YOU OPEN YOUR BIG MOUTH......


Modified by DC2ALLMOTOR at 9:34 PM 10/4/2008

 

also, I was thinking it could be your air/fuel mixture...maybe too much or too little...check that too....it you or your tuner could find that soft spot you can solve the dipping problem....I reconfirm the last dyno test we did, our street power car did not dipped at all...it was a clean steady climb up to 9500.....wants to make more power as rpm climb but our tuner stop at 9500rpm......re-check your ratio

 

any dents in the header?