BTW, I find it ironic that out of about 7 or so cars there that day, my car was the only one that didn't have some kind of mechanical problem. One blew an oil line; one got a crack in the exhaust manifold; one had brake problems; one wore his brakes down to the backing; and one may have skipped the timing chain (or worse).... funny how life happens.

 

OMFG this car is so sexy! same color as mine except yours sounds so sexy and the engine omfg that video was so hott.

 

Here are a few pics of the car at the track:

 

Another quick update:

I've been very busy lately, but I've been trying to make slow but steady progress on the car. Last weekend I finished cutting & installing the aluminum floor plates. Even though I made a cardboard template, I had a few issues with fitment...but I think it turned out good enough:





I've already gotten a lot of positive feedback on the floor & the interior in general. It feels minimal but very functional....

And I've finally had time to take the car out again for another tuning session yesterday. Previously I fixed the wiring for the boost controller, so I needed to start setting up the parameters for the control algorithm. The first step in that process is to find the "target" duty cycle. This is done by setting a fixed duty cycle.

I didn't want to accidentally make the boost too high, so I set a 35% duty cycle to begin with. This increased the maximum boost by about 5psi. to about 20psi. (see plots below). I then had to make some adjustments to the timing & fuel tables at those boost levels.

Old Plot:



New Plot:




Because I just used a fixed duty cycle, the graph is shifted to the right. Once I set up the PID controller properly, I should be able to get it to boost at least along the blue line drawn into the graph below. This graph shows the new data overlayed on the old data (in black):



I did have an issue on the second run session where the engine cut out briefly. I traced it to some water that was shorting out the sync signal. When I cleaned the contact & reassembled it, the problem didn't occur again.

Also, this is also the first run I've had a chance to log GPS data from the AIM data logger. This software is very different from the analysis software I've used before, so I'm still getting used to it.

Just for fun I tried out the engine performance analysis view. By entering the vehicle weight (including driver), frontal area & drag coefficient, it calculates HP & TQ to the ground.

In theory it is saying I'm making 315 HP & 277 ft/lb of torque to the ground...BUT I'm very doubtful of those numbers at this stage. I'm planning on taking the car to the dyno in the near future; that'll give me something to compare this to....




Slowly but surely.....

 

..... I have to go change my underwear.


^-^

 

a very good read that the i/c looks good but i would say that as i have one on my car thats almost the same.


lee

 

Welcome to NAM Lee happy new year, are you coming down Brands on the 5th Feb?

 

thanks paul .not got much time for the car at the moment i moved house late last year and things are still in boxes all over the house.not allowed to play out till i have the house sorted that should be in about 10 years.back on topic good thread this it brings back memories

lee

 

https://www.northamericanmotoring.co...ct/1435/cat/22