96 Civic hatch with a Gsr with oversized P30 pistons. Running with portflow valvetrain and Rocket M22 cams. Stock Honda cam gears. Vtec engages at 5800 rpm. Thing is anywhere under vtec the motor runs/pulls really good. But when vtec turns on it like bogs/hesitates but you do hear vtec cross over.

running an obd 2a-1 harness with a chipped P28 with a program for a stock lsvtec

any help is appreciated

 

tuning is key, especially with aftermarket cams, a generic chip wont give you the results you are looking for. Pm rocket and see if he can burn you a chip

 

agreed have that best tuned man m22s are an aggresive cam and im sure they dont like being ran on stock lsvtec fuel/ignition maps

 

Like they are saying, sounds very much like a tuning issue. PM me with your email addy, and I will have Rocket contact you about getting a chip burned.

 

why would you install stock cam gears with aftermarket cams.. and you need to tune it

 

What injectors, fuel pressure and initial timing are you running?

 

Tuning is a must. Prelude 290cc, 12 degrees

 

m22..............

 

Rocket Motorsports cams

 

when i had them in the car, we had it at 18 degrees timing..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by XtraFastCRX &raquo;</TD></TR><TR><TD CLASS="quote">why would you install stock cam gears with aftermarket cams</TD></TR></TABLE>

r u running stock springs/retainers? you should definitely get some adjustable cam gears and get that thing tuned. you don't even have an AFC or anything?

just do it right or don't do it at all...

 

look for rocket............

 

I'm running M22's as well and I am waiting on tuning next week.
I've got RM valve train too though. I am using stock cam gears as well and don't see a problem with it. I'll let you know how tuning turns out.
BTW I am having similar problems after Vtec, although I've had a chip burnt for me by Rocket.

 

Portflow FULL valvetrain. I guess i just better wait for tuning. I just wanna feel the power already haha

 

What valve lash did you set the cams at?

 

As Rocket would recomend.
.007 Intake
.009 Exhaust

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sik civic &raquo;</TD></TR><TR><TD CLASS="quote">As Rocket would recomend.
.007 Intake
.009 Exhaust</TD></TR></TABLE>

what he said

 

has this issue been worked out yet?

 

I have the same problem with my m22 in my jdm 11:2.1 type R engine cam gear 0,0
uberdata in couples of days
no power before 7500rpm but after...holy ****!!
m22 +4.785 final drive looks like funny

 

did you tune it already? we wanna know!

 

Is your head or block milled? If so how much?

 

19 degrees! all in the tuning