7 eleven

For mods I have k&n intake, efini y-pipe, XS FMIC, Double throttle removed, light street port, HKS down pipe , Mid pipe, HKS super Dragger I was running PFC with base map and 4 by 850cc Injectors with a Supra TT Fuel pump and some ACCEL300+ plug wires.

Here's the first runs, Lifted early due to low 13:1 A/F way to lean.

7 eleven

Here I added alot of fuel but by the end it was coming back up. I already didn't trust the pump (got it almost free) So I was guessing it wasn't flowing the right amount. I had the stock pump on hand and did the switch.

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Next runs were with the stock pump and some tuning got my magic 11.5:1 A/R one one run and then added fuel to bottom and midrange and overshot a little but I fixed that.10 psi on these runs too.

7 eleven

the last runs was cut short due too the spark breaking up.oh well. But the A/F was solid. The power wasn't great but it was 97deg out.
I'm guessing the Bum fuel pump was to blame for the lean first runs.
I'm looking to get a walbro Fuel Pump and HKS twin power next to fix these problems.

Badog

Change the plugs and wires, if you haven't yet. While the Twinpower will just plug in, installing it nicely will take a little time and removing the elbow. Might as well take care of 'bidnes' while in the area.

rx7will

iTrader: (6)

What whas your torque curve like. You just adjust fuel? Did you play with your ignition also. Any info would help, i'm planning on tunning my car soon on the dyno.

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I didn't get a good pick up so the TQ didn't come out. My main goal was the A/F readings. Also I didn't touch the timing. My plan was to start at the stock boost setting and get the A/F then work up to 14psi. But once I saw the bad pump I knew it was going to be a long day. so was looking to just learn some stuff. Plus it was 97 degress out so I wasn't shooting for power. Since I was on the clock I just used the pim table to set the fuel I'll go back and put in the correction maps later. here's what gave me a 11.5:1 A/F on my car at the .7 boost setting.
8000rpm 110.1%
7000rpm 110.1%
6000rpm 110.1%
5000rpm 110.1%
4000rpm 114.4%
3000rpm 116.2%
2000rpm 112.2%
1000rpm 100.0%
Thats off the top of my head but really close.

artguy

how did the car run at the 13 to 1 fuel ratio? did you hear any detonation?

thanks

j

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No the car is too loud to hear it. I do have a J&S knock sensor and it didn't light up so I'm guessing it didn't. It did on the street once or twice but I backed out right away.