Hey guys
Been a long time since I have posted here in this thread.
Since having it registered, I drove it for a bit...and felt like it was performing very poorly, approx. the same power as my daily.
Sure enough, I took it in to a local workshop and said "Seems a bit gutless". They put it on the dyno and it turned out a...MASSIVE 60rwhp.
They fixed the problem, and found that the secondaries in the throttlebody were jammed closed. They fixed it up and it then turned out 108rwhp (which I think should be about normal for it).
After that, for some unknown reason, boost would rise 6psi as normal, but then from 3500rpm onwards it would drop off to only about 5psi, which was annoying and it turned out less power again...
Replaced the viscous fan with a pair of thermos as it was running 100% of the time, even when it was cold. I just drove it around for a bit as it was, got some enjoyment out of it.
Had been thinking about an intercooler for a long time in it, but was told it was a lot of work to do, especially if I wanted to keep the airbox and make it look as factory as possible (both things I wanted to achieve, so as to keep induction noise down, and I didn't want big, shiny piping, and also didn't want a big ugly cooler hanging out the front).
The guys at the workshop suggested water and methanol injection, which at first I wasn't keen on, but I ended up getting it fitted. Had a boost controller put in and got it put on the dyno again, this time turned out 145rwhp at 9psi. They said they had it running at higher boost on the dyno and it was all good, but they backed it off so it was 100% safe. They also noted it picks up 10-15hp if you remove the lid of the airbox, so it must be quite restrictive at 9psi.
That's pretty much where I am at with my Cosmo
Cheers.
Dave
