1988RedT2

The obvious explanation would be superior driver skill.

roadkill669

That sucked for me. My car should be in the mid to low 8's. I got fed up with the times so I turned the boost up and threw my second fuel pump on. Still ran a 9.5. WTF!!! Car felt good at the launch. Spun a little bit. I do not burn out so my tires were hard and cold, big problem there. Turbo brought it up to 16 psi, but was still running lean.



I have been doing alot of experimenting lately with my new fuel setup. I have the stock T2 pump with a 240sx pump t-ed in. I have a switch that allows me to choose the ECU to control the pumps (26 psi idle, 36 psi WOT) or full power (45psi)

The first pass I turned the pumps on and didn't adjust the SAFC. Running 11 psi and was a little rich. It started to lean out around 7K. So, then I played with the SAFC a little bit and ran another time. I had a horrible start. This was my first time launching with the 6 puck also so I was dropping it around 3K. Didn't work, so Rxx's decided to slip the clutch at around 35 and ease into the throttle. Spun a little, then hooked up. Ran a 9.5.



RotaryMan has been telling me that my fuel pressure is way off of stock. It should be around 45 or something. So, new fuel system has been added to my list before we head up to MIR November 1st.



FOr the people who read in to our post about the Top Mounts, THEY SUCK!!!! When I was sitting there in the staging lanes, saw 160 temps in to the motor. Damn heat soak. That was a big issue right there. I forgot to hook up my bottle heater also, so I only had 300 psi in the bottle. That was also hurting me.



I'm going to go again next Tuesdy and run an 8.5. No doubt about it. My car will have totally changed by then.

1Revvin7

MazdaEnthused

had no idea top mounts suck so bad... um... i was gonna say somthin but i can't figure out what it was ... i had no idea that there is so much to factor when it comes to racing a simple 1/8th

roadkill669

Well. I found out why my car ran like crap. I decided to take my upeer manifold off and play around some when I noticed that one of my primary injectors were leaking, so I put a new o-ring on it. Looked at my fuel rail and decided to have a look at the FPR. The little adjusting screw was missing. That would explain why I only had 36 psi of pressure. I also found that the coupling from the turbo to the intercooler was loose and sucking in air from there. So I fixed all of this and added my bottle heater.



All I can say is wow. With my 2 fuel pumps, I get up to 60 psi of fuel. It normally stays around 45-50. But I can now chirp 3rd. Thats on 10 psi. I wanna feel 16 again. That was a great ride when it did it without fuel.

roadkill669

They don't suck when your on the go. Heat rises and guess where the top mount is. I actually did a neat experiment this morning when it was 40. I let the car idle for about an hour. The temps were 183 in and 169 out. I then opened the hood and in about 5 minutes, the temps were 159 in and 112 out. So next time, I am leaving the hood open in the staging lanes and instead of the intercooler sparyer, use a little 35-50 shot.

MazdaEnthused

its all about pickin up on stuff you can do better next time