ok as some of u know i have a 2000 civic si..i was gonna ask u Si owners if u have any kinda problem with acceleration and top RPM..like on mine when i get on it and it goes into vtec u can BARELY hear it..and it will only pull till like 6800 or 7000 rpm's and feels like somethin is holdin it back..my car only has 64k miles on it..i goin tawards it bein somethin in my dizzy or maybe my catalac convertor is clogged up..anyone ever had this problem????

 

Check your oil. Low oil pressure will alter the effectiveness of you VTAK, since it relies on a certain oil pressure.

 

its got plenty of oil...imma change the oil 2day and see if that helps ANY

 

air filter dirty?

 

are you running stock intake? i have an AEM short ram and it's pretty damn loud when vtec hits.

does it happen in every gear?

 

Time for a tune up, fuel filter, valve adjustment and catylitic converter clog check.

 

i also have a 2000 si.. when my cat was clogged it seemed like it took forever to get to higher rpm's.. it was really restrictive.. that could be the problem??

 

i dont think the fuel filter has EVER been changed on my car with over 100,000 miles on it.... not good. lol.

 

Low oil could cause it. When I first bought my '99 Si, it was almost bone dry.

 

Mobil 1 Synthetic 10w40, thats what I put on my VTAK engine, i change it every 2000 miles because i go into vtak alot

 

well i got a AEM short ram myself..and the car just got a valve adjustment...but yes i think its the convertor..i got a question tho...theres a 02 goin to the convertor if i cut it (i know it'll throw a CEL) will the car run bad or not run at all...?? or will i just get a CEL and flow alot better?? or can u tell me where to unplug it??

 

yea mine feels like its revin WIDE OPEN but the rpms are barely movin...

 

electrically diaconnecting a sensor is not going to improve flow, just unbolt the cat and see what it looks like, drive it around with an open header for a while to see if its the exhaust restriction.

then try the fuel filter.

 

Mine does the same thing. Let me know what ya find out. Have not looked into it to much cause I'm gonna take it back apart to add a few things and take out alot. so yeah.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EGmikeH22 &raquo;</TD></TR><TR><TD CLASS="quote">drive it around with an open header for a while to see if its the exhaust restriction.
</TD></TR></TABLE>We don't all live in Indiana..lol

Do NOT cut your O2 sensor.

 

well i plan on doin an obd2-obd1 conversion later on anyway...but i mean if it wont hurt anything but throw a CEL imma just cut it...

 

hondas have a lifetime fuel filter, not saying it would hurt but dont see a point in changing it. check your cat, air filter and valve adjustment

 

air filter is new..but i'll take it off and see if it helps..im pretty sure its the cat...now checkin the valve adjustment i have no clue on doin that...i'll have to have someone do that for me..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dohcMONSTER &raquo;</TD></TR><TR><TD CLASS="quote">hondas have a lifetime fuel filter, not saying it would hurt but dont see a point in changing it. check your cat, air filter and valve adjustment </TD></TR></TABLE>


BS... they get dirty like every other filter out there... change it... might not be your problem but it will help with gas mileage and a smooth ride.... think they need to be changed like every 105xxx miles or something like that. every filter gets dirty no matter what car its in.

 

cutting your o2 sensor will not improve the flow of exhaust through your cat. have your converter checked and either gut it and get an o2 sim or buy a high flow or a test pipe. then youll have MAD VTAK!!!

 

your not understanding me...im not sayin if i cut my o2 will it make it all better...im sayin if i cut it will it hurt anything besides a CEL if not imma just cut it to get the cat off and gutted...b/c the sensor on the cat goes all the way in the car somewhere and i cant get anything to grab the o2 to take it off and its rusted up in it so i wanna just cut it and gut my cat and run a cel until i convert my car to obd1..??? sorry for the confusion

 

hmm Im making power well about 9000 rpms

 

what out of your integra

 

hmm

 

no 2000 si