I currently own a 1990 Ls b18a block 0 restriction exaust:hollow cat,no resinator, downpipe 4-2-1 headers and a big ol'coffiecan. Forced coldair Intake other than this the vehicle is bone stock. Lately upon acceleration nomatter the gear the Ls shudders and seems as if it is getting no gas to the heart of the motor. Ive taken off and inspected the intake and there is 0 blockage I have just recently replaced the throttlebody assembly and this houses the TPS and still nothing has changed. This has got to change I need a new integra and need to fix the current before it can be sold.

 

fuel pump, fuel filter, injectors, spark plugs? just some suggestions, are you getting any sensor malfuntions? did it work better before the tb? - ive got pretty much the same in/out setup, and it works pretty good, however with so much air flow i hope you have a fuel pressure regulator -- you need to think smaller - its probably not an air flow issue thats my 2 cents hope it helps

 

Cross your fingers and try replaceing your fuel filter.

 

could be a bad slug of gasoline. which can be a problem for many people around this time of year when they switch from winter formulas to summer formulas. i had a tank of bad gas the other week. first time i went to exxon in 4 years, put some techron additive and ran the tank empty and filled up with chevron again. car runs perfect.
if that isn't the problem, check the fuel filter. you may not have enough back pressure for the car to perform ok. you seem to have a very high-flowing exhaust sytem with no internal work.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by texnteg &raquo;</TD></TR><TR><TD CLASS="quote">could be a bad slug of gasoline. which can be a problem for many people around this time of year when they switch from winter formulas to summer formulas. i had a tank of bad gas the other week. first time i went to exxon in 4 years, put some techron additive and ran the tank empty and filled up with chevron again. car runs perfect.
if that isn't the problem, check the fuel filter. you may not have enough back pressure for the car to perform ok. you seem to have a very high-flowing exhaust sytem with no internal work.</TD></TR></TABLE>

True... or maybe one of your "buddies" slipped your car a little something...

 

I just picked up an entire new distributor I installed that along with a waterpump and new timing belt. all this was done as weird as it may seem because of a bad bearing in the distributor which is attached to the upper intake cam and this locked up and caused the timing belt to slip on the gear but somehow realign itself and turn over when cranked. wow this is something I have never heard of and definatly never seen. well while doing this i also got new plugs wires rotor cap and still the problem persists. so i will take the advice and move on to the fuel system before playing with the costly intake.

 

Check your spark plugs.

 

you ask if i have a fuel pressure regulator upgrade?? why would this cause a problem because of my exhaust??
-I also wanted to add i have noticed upon regular slight acceleration from a dead stop to getting the beast rolling the car takes a dive (as if i were to just let the clutch out without gasing it then give it gas)?

-unless i have the throttle at about halfway: 2 1/2 - 3 rpm when starting from a stop the vehicle bogs like its not getting the fuel it needs to power it. and i know what i am doing is not so great as far as scuffing the clutch goes but for now i can't do anything but.