(EP3) Revhard 550cc VTEC crossover

EP3_Turbo · Post by **EP3_Turbo** » Sun Jul 17, 2005 11:11 pm

i am having problems with my low cam / high cam vtec crossover on my k20a3 (ep3). it seems to run okay in the low cam, but when the cam start switching over it gets really rough. When it does crossover, i get this burst of power out of nowhere. Is there anyway i can cure this? Perhaps something with ignition values? Any help is appreciative.

Post by **Hondata** » Wed Jul 20, 2005 3:16 pm

Can you post your calibration?

EP3_Turbo · Post by **EP3_Turbo** » Thu Jul 21, 2005 4:57 pm

here is my calibration... its basically the base map you have set, but with a/f tuned with the lambda overlay for my boost tables. The jerking happens even when running just the base map.

Post by **Hondata** » Thu Jul 21, 2005 8:13 pm

Calibration looks OK; can you post a datalog?

EP3_Turbo · Post by **EP3_Turbo** » Thu Jul 21, 2005 8:33 pm

this is in 1st gear...kinda rough

i just recorded this at part throttle going over my vtec crossover (2200)... seems like it only happens then. Other ephatch members have complained about it as well and that it only happened after they got kpro.

EP3_Turbo · Post by **EP3_Turbo** » Thu Jul 21, 2005 8:33 pm

and this is a 3rd gear run

sf-si-02 · Post by **sf-si-02** » Fri Jul 22, 2005 3:51 pm

I am having the exact same problem running the jrsc calibration on my civic si (the race version offered in the calibrations with the software); sputtering which leads to very violent jerking of the motor below 2000 rpm on a k20a3 ep3.

I feel this has gotten really bad lately, and I should also mention that I recently downloaded the latest k-manager and used the used the same hondata-calibration albeit now I have the jsputtering problem. I am also aware of atleast one other k-pro user who recently downloaded the latest hondata k-manager software and recently began experiencing the exact same problem in their ep3. I wil datalog and post by tomorrow evening.

thanks