sarge
15+ Year Contributor
- 261
- 0
- Nov 4, 2003
I picked up one of the Precision turbo SCM 50 trim turbos about 2 months ago (the one rated for 450hp). Jay and matt (if you are in the carolinadsm club you have probably met these two guys) were kind enough to install my turbo on christmas day. the 50 trim replaced my frank Jr. 17c turbo. The 17c was a pretty good turbo, but I decided I wanted to go to something bigger.
Well, later on christmas day i picked the car up. Boost was set at 12psi, and it was incredibly strong there, roughly like 17-19psi on the 17c. Several days after that i messed around with the wastegate actuator arm and got the base boost level up to 15psi. 15psi on this thing is fast. About as fast as the supercharged roush stage 3 mustang. I happened to run into one on the highway about a week ago, and from 60-140mph, he had less than 2 cars on me. Later I talked to the guy and his mustang put down 328.8whp, and ran the 1/8th mile in 8.07, so I am guessing that my car is making somewhere close to 300whp. Thats just a rough guess though.
The pte 50 trim w/.63 ar is an excellent turbo. I have this in conjunction with the dejon tool 3 inch intake. I can hit full boost in 2nd gear at less than 4000rpm, and in gears 3-5, it hits full boost by about 3600-3700rpm. Very impressive for a turbo that size i think. Currently its pretty untuned. I took the SAFC settings for a big 16g equipped car and 550's and FMIC from RRE, and just added several % more fuel in the 4-7500rpm range. EGT's peak at about 850C on runs from 0-120mph. I was planning on on having the car dyno tuned at 17-18psi, but my car started to burn more oil than usual (valve stem seals are starting to go, 120k miles on them). So instead I will have the head rebuilt on my car, then probably in the summer get it dynotuned after the head rebuild. Or, if you guys think that dynotuning will still be effective on a car that has bad valve stem seals/guides i may go ahead and have it done.
I didn't see any good reviews of these turbos, so I figured I would write one. Tell me what you guys think!
Well, later on christmas day i picked the car up. Boost was set at 12psi, and it was incredibly strong there, roughly like 17-19psi on the 17c. Several days after that i messed around with the wastegate actuator arm and got the base boost level up to 15psi. 15psi on this thing is fast. About as fast as the supercharged roush stage 3 mustang. I happened to run into one on the highway about a week ago, and from 60-140mph, he had less than 2 cars on me. Later I talked to the guy and his mustang put down 328.8whp, and ran the 1/8th mile in 8.07, so I am guessing that my car is making somewhere close to 300whp. Thats just a rough guess though.
The pte 50 trim w/.63 ar is an excellent turbo. I have this in conjunction with the dejon tool 3 inch intake. I can hit full boost in 2nd gear at less than 4000rpm, and in gears 3-5, it hits full boost by about 3600-3700rpm. Very impressive for a turbo that size i think. Currently its pretty untuned. I took the SAFC settings for a big 16g equipped car and 550's and FMIC from RRE, and just added several % more fuel in the 4-7500rpm range. EGT's peak at about 850C on runs from 0-120mph. I was planning on on having the car dyno tuned at 17-18psi, but my car started to burn more oil than usual (valve stem seals are starting to go, 120k miles on them). So instead I will have the head rebuilt on my car, then probably in the summer get it dynotuned after the head rebuild. Or, if you guys think that dynotuning will still be effective on a car that has bad valve stem seals/guides i may go ahead and have it done.
I didn't see any good reviews of these turbos, so I figured I would write one. Tell me what you guys think!
) All is fixed now and the 50 trim has shown my ignition issues. I stumble a couple times in a heavier load gear like 3rd. So im thinking im just not getting a good combustion. 
