russc wrote:Do you have any more info on the UniChip? Schems, specifications etc. I can't find any info on the net technical wise.
I don't have too much of that, but
www.unichip.us is their US site. The biggest downside is that they work through tuners only, meaning you can't tune it yourself. For me, that was fine because I don't want to change anything on the car once it's tuned but some people like to have that ability.
So how is mid throttle boost AFR's? That the real issue with what you have. Can the UniChip ECU run proper AFRs at 3-5psi at mid throttle? Does the UniChip clamp the O2 sensor ouput or do some other signal manipulation for mid throttle boost?
I would assume the mid throttle AFRs are good- the shop did tune the car throughout the rpm range. But, I don't know what they are, I didn't ask other than to tell them to err on the safe side.
What is the second dyno chart? You .10 run is 315whp and 345lb-ft? Is that your best run? What where the AFRs there?
That was the best hp run, but there was *slight* pinging so they richened it up a bit. It was just over 12 at the leanest point. The red line is my '91 from 2 years ago, I just thought that it made for an interesting comparison of turbo sizing. The old car had a much larger exhaust A/R and you can see that reflected in how long it took to spool.
Overall, at 12psi, the #s are pretty close, maybe a little on the low side. Maybe some timing/AFR tuning can help a bit. But if your satisfied, thats fabulous. Nice looking numbers all around.
I'm pretty happy with the car. There are a couple minor driveability issues I'll be going back to have them fix but overall it's much improved over how it was driving before.
They did a baseline before the tuning and installation and the curve is up about 20hp and ft-lbs across the whole rpm range. I imagine that it would be possible to get a little more power, but this car will be on the track a few times so I wanted a nice conservative tune on it.
