rico05 wrote:How did I not know you have a VPC Mike? I have been trying to find one to run with a SAFC for the longest, but the only one I keep seeing is that $500+ one that guy on eBay always lists. I'd pay $250 for a 10 year old magic box, but no more.
Looking good man. Has the little lady driven it yet?
You don't want to stack a piggyback on a piggyback like that. I got the VPC years ago at a nice price, set of rims or something like that. I only use it because I have it; were I without it I would go standalone. There is nothing wrong with it, it just isn't as flexible as a SA is. I can't manipulate my timing for instance, just the base.
You missed more than you think. Notice the repeated use of "my" in the posts. The car is mine now and she is not.
Well the car was sounding like a tractor, boost was coming on slower and spiking very high. This is actually my first external wastegate experience and in my virginity I never realized the importance of the boost signal to the gate. I simply thought "big *** spring should stay closed ok and open earlier than intended for now without it. I have a lot of good ideas, this was not one of them. I brought the car in and threw it up on the lift because that is the only way you can get to the gate after the frontpipe is on. I was screwing the line in and I finally understood the backassward logic I had been working under. The port actually works against the spring, not with it. Without it boost could not aid the exhaust pressure to overcome the spring and the result is boost well over 1 kilo. I also noticed the head of the wastegate wiggled, Well, I have torn down all my gates and sandblasted them so at one point all the bolts had been pulled and put back in, apparent like a pretty little girl. The bolts holding the spring chamber to the valve chamber were backing out as were the ones holding the cap on the spring chamber, one had already fallen out. The wastegate was literally falling apart. The gate valve was hanging open because most of the springs work was being used to separate the gate rather than hold the valve shut. result boost lag and John Deere tone.
I stripped it down still bolted to the manifold and tightened everything up like I meant it this time. The results? boost response is real nice, at 3000 the turbo raises it's head and full boost is in before 4k. The bad news? Now that the gate is properly installed I can finally see which spring I have, it is down to .4 kilo and a bit, Boooo! Riding around for a few days swinging it up to 1 kilo for short spurts gave me a glimpse of this turbos potential so while I can now crack the gate wide open and scream without worry it is not as satisfying. It's like dating Jenna Jameson and she only lets you get to first base when you have seen what she does in movies. If only I had another wastegate. If only I had another wastegate sitting in the corner next to my modem. if only that gate had the green .7 kilo spring in it, if only,,,,HEY, wait a minute! All those years of hustling parts and hoarding is paying off