"How To" Build your own Fuel Pressure Meter

[cj]

I have an Apexi Rev/Speed Meter installed (like the G-Tech Pro Comp gauge toy). I set it to measure mid-accelaration from 80-120 km/h. I put in third gear and perform the test a couple of times. This is how i meause my mods - no gear change, no tire roll out.

Now to the question: no, i did not notice any improvement. As a matter of fact i got way slower times. My quarter mile times worsen with 1-2 secs, depending on the fuel pressure settings. Now i use the regulator but it's set to the stock pressure.

Additional note: i changed my stock fuel pump since it was anable to keep the pressure more than 3.0 bar at high rpm. The test above was made with the new pump wich kept 4.0 bars without any problems through out the whole powerband.

regarding the injector question: yes, they are stock. I did performed another test - i used i wide band meter to see if the injectors are feeding enough fuel (a/f ration stuff...) and i found out that the a/f mixture was good enough - 12.5! So now i decided not to play with the f/p regulator untill more air is introduced to the engine or valves are replaced!
...or both