I am getting frustrated.

My car is running worse and worse. I can't figure out where the weak link is.
My hondata system is tuned so its not my fueling mixture. I get nothing on my datalogs to lead me to a definite answer. I get the worst hesitation at a very specific manifold pressure (about 380mbar vacuum--from a relative of zero atatmospheric) . It happens worst when I come off the throttle then back on the throttle or if I blip it right around that throttle position. Its annoying because its right at the position where I cruise around most of the time. The car also does not seem to run smooth at all and seems to be sluggish and spool up slow too.

1) I ordered an AEM fuel regulator because i thought the B&M riser may be a fault. That will be here any day.

2) I wonder if its my Carsound cat that may have plugged up from running rich for about 4 months (and burning some oil from the turbo). Any good way to confirm that? I hate to buy a new one and have to reweld my fittings on. Is there any downside really to gut this one out and have pseudo "test pipe"? Is it hard to gut a cat?

3) Could it be my purolator fuel filter? Its only a year old (maybe 7000 miles on it).

4) Could it be ignition related? I have wondered if there were problems because a dyno guy tried to hook up an electronic tachometer to my tach signal wire and got very erratic readings (even though an analog tach and my dash tach read fine). I just keep that in the back of my mind that maybe I need a new ignitor module?

5) Anything else that can cause these symptoms? My intake manifold and vacuum lines all seem quite secure, I get steady vacuum readings so I don't think there is a leak there?

thanks if you have some suggestions or had symptoms like this!

Torin

 

Art said he fixed that hondata hesitation by using very different ignition maps from vaportrail.

I fixed it by getting the EMS.....

 

i tried using ignition maps from a different car (an B16 engine with single runner manifold since I have a Skunk2 intake). didnt change things at all! It had about 5deg more advance at low loads and took out those dips in advance on the GSR engine.

Do you have a map of your ignition I can look at. Perhaps I can enter by hand.

send to torin_finver@hotmail.com

I will ask him for some maps to try though!

Do you know if I will run into problems with my Carsound Cat. if I gut it out?

thanks.

 

i hope i dont get any hesitation with my car or ill be upset!

 

Nope not fixed.. It was just my imagination.

art

 

Still have mine too. But then again Im still untuned....

 

about the cat: I gutted my stock honda cat out.. all i had to do was use a bar of rerod and bust up the ceramic mesh type stuff in there and dump it out.. it was EZ.. dunno about ur cat tho

 

It sounds like a tuning issue to me. Let me see your maps(fuel and Ignition)
i should be able to help out.

 

well, it definitely does not happen on all GSRs. Perhaps it has something to do with my throttle body/skunk2 intake? Its not a fueling issue, I have tried all combinations of fueling around that point and nothing changes. Timing is possibly an issue but I tried smoothing out the stock GSR timing map and that did not change things. I am going to have a new Carsound cat sent to me because mine may be plugged up from running rich and oil burning for a period of time