All the graphs I've seen of fairly stock ITRs have a dip after 3400rpms up to right before VTEC engagement. Is it possible to get rid of it?

Exhibit One

 

Perhaps? Does this one look better to you?



Ignore the spike at 4400, that's the AEM. And what do you mean by "fairly stock" - I/H/E?

 

Yes, fairly stock means I/H/E.

 

3400RPM? or did you mean 5400?

you could get rid of it by lowering vtec

 

I'm actually concerned about the descent of torque from 3400 to 4000rpms. I'm losing 3+ torque that I wouldn't mind having.

 

with a vafc, probably not.

 

I guess the continuation to that is, "with Hondata, probably can."

 

To answer your question on the hondata...

I would say it can help the most because of 1 factor the AFC can't do, and thats timing.

If you raise the timing on that particular motor build, you will get more HP because your running the cast pistons.

With some more HP down low in the area that is semi flat, with a slightly lower VTEC, you can get more of a straight line torque curve.

Your graph looks pretty good, nothing wrong with it.

Jeff

 

Mine was straightened out and dip eliminated after tuning but everything before 5000 RPM was purely due to cam gear adjustment and not VAFC.