K I just pulled out my buddies tired LS and put in a B20B. its in a 4 door civic, the guy he bought it from put a complete90-91 Integra wiring harness in it, for the entire car. Why he did that is beyond me. Well anyway the swap went fine. When I drove it the car is fast till about 3k rpm then the intake gets ridiculously loud and loses hp and some times it feels like a slow rev limiter at about 6k. so I believe its timing but its something I have never seen before, first off the motor was set at TDC. when the distributor is where it should be it idles perfect. But when I through a timing light on the motor and moved the distributor so the crank pulley showed TDC, it had a rough idle. It also sputtered and then revs when I pulled the throttle back. Everything worked fine on the ls. And there’s no mill (check engine). A few other things we put ls cams in it. It has noligy hot wires don’t know if the grounds on the wires could do anything and were using the b20 crank pulley. Has any one ever experienced this before????

The distributor looked like this when the crank pully read TDC.

 

wow, it's pretty far off

 

When your cams are at TDC, is your crank pulley WHITE mark in line with the lower cover pointer? Either your crank is off or your intake cam is, one or the other.

 

why would you want your ignition timing at tdc?

 

looks like it is off by a tooth or 2, i would TDC the motor and check to make sure the notches in the cam gears are lining up

my friends car ran like total *** because his exhaust cam was off by only 1 tooth, so i believe you are having the same problem

 

Try switching to regular plug wires. Your Nologies could be sh-t.

 

when motor is TDC, the ignition should be set to 16 degrees BTDC on a stock motor

 

im going to play with some stuff today. i was told that it could be the intake cam is off one tooth thats why the intake gets so loud and dosint go any where. second opi?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by danb18c &raquo;</TD></TR><TR><TD CLASS="quote">im going to play with some stuff today. i was told that it could be the intake cam is off one tooth thats why the intake gets so loud and dosint go any where. second opi?</TD></TR></TABLE>

Yes that is true, I would definetly fully re-do the timing to try to fix the problem

 

A) Make sure you're entering timing mod to prevent the ecu from doing funny stuff while you try to time the car
B) Either you're setting the car at TDC vs 16*s BTDC or your cam timing is off a tooth
C) Are you running the firewall MAP or one mounted on the throttle body? If its a firewall mounted unit, double check and make sure the vacuum line going to it is good.