Thread: PSI Pipe Info Posted
02-27-2007, 05:37 PM #1
PSI Pipe Info Posted
This is a copy and paste from the PSI forum. dated 2/23/07
littlie more info!take old forum!
The PSI single pipe is actually your stocker They work awesome on the 94 and newer SL750 and 95 and newer SLX780 and SL780. You really have no options for your model. I wouldn't have given up on the triple pipes. With newer parts now available, I think they could be made to work just fine. I too have a brand new set for my 96 SLX780 but right now it's set up with the 92-93 SL650/750 stock pipe. 7000rpm 60 to 61mph and great bottom end. I can go into detail but it won't work on your 93. If anyone wants my ideas on how and why I think the PSI triples can work let me know and I'll post it?
PSI no longer makes any PWC parts. You had a dry pipe in there originally and it also had a shorter cone section. In 94, Polaris went with a different pipe (wet and a little longer). It had a totally different powerband and was a great bottom end pipe. Your stock pipe or one off of a 92-93 SL650 revs higher. Your limiting factor is your pump. The 92-93 pumps were inferior to the 94 and newer pumps. When you mate the 92-93 pipe with the newer models, you do have to use a Pro785 cdi because you will be on the rev limiter. The 92-93 had a higher rev limiter but the curve was terrible. Since the introduction of the Pro785, it's heigher revving cdi and more favorable timing curve worked really well with the older pipe. You do have to prop down also. I run a 12/17 swirl with an 87mm nozzle (stock is 84mm, yours is 82mm old pump).
Back to the PSI single pipe and also the Hot Seat pipe. It is really a rebadged 92-93 Polaris stock pipe.
As far as the triples go, this same scenario whould work. The problem with the pipes was that no cdi was available when they were produced. You had to use the CDI from a 93 SL750 because it had a higher rev limiter. I can't remember exactly but I tink it's 7000 vs 6700 of the 94 and up 750/780. The problem was the curve was really bad but that's all that was available. This is where the tuning became an issue and people didn't have much success. Once again, with the Pro785 and its cdi interchangeability with the 750/780 offering a performance timing curve and an 8000+ rev limit, it really uncapped the potential of the old pipe and I am guessing the triple pipes. I have yet to try them out but I am confident that it will work once I do.
02-27-2007, 05:57 PM #2
haha I started that thread back when we were still over at pwct!!!!!!!
I got more info from you guys than I did from them
02-27-2007, 07:59 PM #3
I wrote all of that.
02-27-2007, 08:25 PM #4
02-27-2007, 09:03 PM #5
- Join Date
- Aug 2006
- Pittsfield, MA
02-27-2007, 09:37 PM #6
There is the mag test on the 94 SL750.
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