I have a miss at high rpm, 4000 and up. I thought it was the opti, but i hooked a fuel pressure gauge up last night and drove it, and I found that my fuel pressure was dropping to 35-38 at WOT, and sometimes would drop to zero for split seconds at a time. Any ideas?

 

BTW, i disconnected the vacuum line on the regulator and drove it, and it didnt get any better.

 

It sound like your problem maybe a bad fuel pump. Whenever there is a drop in fp like that it is most likely due to a bad fuel pump.

 

I agree

The most noticeable sign of a bad fuel pump is inefficient flow at RPMs, and WOT. I would highly suggest u replace it ASAP before it goes out completely on u.

 

any suggestions on a good pump and where to get one?

 

If you do not plan on doing any internal upgrades to your car then you can get away with going with a Walbro 195 lph. If you plan on doing heads and cam then I would recommend going with a 255 lph intank pump. You may want to try and contact Jack at Racetronix.

 

Its the pump.

Get a Walbro 255 from Racetronix.

I'm selling my Walbro 255 in 2 months as well. I need something bigger.