gze question for the pros

[Lauren]

Okay, good stuff with the new intercooler. Unfortunately the top mount intercooler is in a pretty compromised position and heat soak is a real problem when you start adding big pulleys and the like.

Can I ask are you running the stock fuel pump? If you are you need an adjustable rising rate fuel pressure regulator. This is because on the 101 SC the fuel pump has a higher flow rate but lower return pressure. You can use the stock fuel pump fine, but you'll need an adjustable rising rate fuel pressure regulator which needs to be setup on a rolling road. I had this done to mine not long after the conversion. Gained 15bhp (well I was losing 15bhp before).

IYSWIM = If you see what I mean.

What you are talking about when the car tops out at 130mph sounds like heat soak, so the boost pressure rises until it hits one bar at which point the spark is cut, but not the fuel which usually results in flames out of the exhaust.

A better way to measure efficiency is to measure the inlet and outlet temps of the intercooler. Power drops off when the outlet temp of the intercooler hits about 70C.

Years ago we did a load of tests on this:

http://www.mr2.net/article_charge_temp_monitor.html

Nohachi:
Sorry, I always associated Eaton with the twin screw type SC.

I understand what you are saying. I am basing what I am saying on a number of years of experience running modified SC's. I had an AE92 spec engine:

http://www.mr2.net/trackdayqueen/beardpt2.htm

I ran this engine on numerous trackdays (I used to work for a trackday company) for a few years, doing well over 30 trackdays with no issues running without an ABV. I'm not arguing that you could spend ages looking at surge and the like, but I just found a solution that worked well without issue.