Just looked over a datalog from my lunch break. The little 903cc fiat motor with a tiny TDO3 turbo from a volvo S80 biturbo managed to generate exactly 160 kpa.
That is over 8.5 psi of boost. My goal was 7-10 psi. I freaking nailed it. This little car scoots now. 
Next stop dyno! Make sure it is safely getting the most out of the extra pressure.
I love this car
That's badass. I love it, even if I'd never fit into it without my claustrophobia kicking into high gear and/or folding my 6'2" self in half.
Yup, very cool car. It's hard to tell, did you get the intercooler on there?
Bryce
Intercooler is indeed mounted
I really need to cut some holes in the rear valence and install a fan on it.
Dyno apt made for thursday.
The car has plenty of headroom. I am 6" tall and have almost 5 inches. You do kinda rub shoulders with passengers though.
Awesome. So simple and fun.
That looks like a lot of fun in a little car. The exterior shot is so minimalist.
OK here goes
The fluke run. This was pull 4 or 6. We are not sure what happened just that we could not match it on further runs
We started out at 61hp and gradually brought it up, this one popped up and then things got wierd. It is leaking boost or blowing past the intake valves due to the springs being too weak or something else strange. You can hear a thrashing noise at 5500rpm when the curve goes wacky, turning up the boost from 10psi to 14 did nothing, oddly when we turned the boost down to 5psi you can see it kept pulling longer
If I can figure out where the boost is going the car will make a bit more power. I also learned that as much as the internet loves the grainger valve a hallman boost controller works much, much better. The Grainger valve would let the boost climb to its set point then drop back to the 5psi of the wastegate, the Hallman held boost steady at whatever it was set at. It was reccomended I eschew both solutions in favor of an external wastegate.
So after near 25 pulls we stopped here. We couldn't squeeze anymore power out of it so until I cure the high rpm problem we had done all we could do.
NA and turbo comparison. You will notice that around 4k rpm I have almost doubled the torque I had before. The car feels ludicrous.
Haha, man, 70hp and 80 ft-lb in an 850, that's awesome. It must be a total hoot to drive.
Once you've sorted out the bugs, what's next for this project?
So you're not using megasquirt to control the boost? Seems like it'd be a nice perk of already having most of the hardware on board.
Bryce
What turbo are you using? It's possible that you are near the edge of the turbo map, and it's just not happy near there.
But that's pretty smoken! (and hopefully not literally...)
The turbo is a TD03 from the right side of a volvo S80 twin turbo 2.5 V6.
MS as a boost controller simply hadn't occurred to me. Now I feel dumb 
Oddly enough I use this style of parker solenoid valve every day at work.
ditchdigger wrote: MS as a boost controller simply hadn't occurred to me. Now I feel dumb
Using MS as a boost controller is a nice perk, and if you want to get really fancy you can even do stuff like staged boost for different loads, different temps, etc. Once you go electronic, it's easy to add additional functions.
Bryce
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