I put a D1 HO in my car a few weeks ago. I've always wanted one and finally pulled the trigger when Procharger offered a $350 rebate.
It's a bit more difficult to tune than anything I've had before. The maf is located in the intercooler. This makes getting the maf xfer and lwfm tables a little trickier for me. I had to get a little help from a tuner I know in Venezuala to get it figured out.
The final tune is going on in a few minutes. From here it's on to a dyno to back up the datalogs I've done. I took a few pics along the way.
This is my modification to the Procharger piggyback sc pulley. One of the things I like about Procharger is the dedicated 8 rib supercharger belt. The standard method is to take the balancer bolt out, put the piggyback pulley on, and install a longer bolt. Three hardened pins align with slots in a factory balancer to prevent rotation. I wanted a little more clamping force so I drilled new holes along side the pins. The holes common to the balancer were tapped, then the assembly was bolted up. The pins were kept in place for shear loading so all the bolts are doing is keeping the parts together.
I was impressed with the quality of parts. Even the blow off valve was well made.
The finished product.