A friend has a DC2 itr with B18C6


After a full mugen phase, he bought this:

Jun stage 3 camshaft + valvetrain
EK9 pistons
-0,4mm head working
and all the suffs needed


Problem is, while tuning, @ 7500rpm, the power false down sudenly, and gets back on 8000.


A guy said it's because of the high compression engine...


Any one ? A solution, or a searching way ?




nagata-san74@hotmail.fr

 

so he put those parts in there with no ecu change or tuning? sounds like what happens when you install parts with no tuning.

 

No !

Tuning has been made on Hondata S300

 

The graph would be helpful. A/F graph too. The fact that it is a high compression engine has nothing to do with a loss in power or dip at 7,500. It could be a header/exhaust dip, or it could be a tuning problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe &raquo;</TD></TR><TR><TD CLASS="quote">The graph would be helpful. A/F graph too. The fact that it is a high compression engine has nothing to do with a loss in power or dip at 7,500. It could be a header/exhaust dip, or it could be a tuning problem. </TD></TR></TABLE>a/f graph could help

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe &raquo;</TD></TR><TR><TD CLASS="quote"> It could be a header/exhaust dip, </TD></TR></TABLE>

What exhaust is he running? (size)

 

I'll get the graph + A/F graph asap

He's running 4-2-1 + catback Mugen Twin loop

 

 

I had the same problem on my 12:5:1 CR GSR with jun 3 cams..

- What kind of cam gears does he have and what are they set at?

- What size exhaust piping is he running.. Test pipe or CAT?