Tom. M

Yea...I think the sound of the S trim (or is it the T trim..can't remember) can be equated to a squeeling pig . But ..for those that know that sound.....BEWARE LOL. Kinda like the rear turbo..sounds like those semi's out there going up a hill...(high pitched whistle)..nothing stealth about that...but again..if you know the sound . The only one that doesn't really have "a sound" would be the roots style...I suppose the ultimate in stealthy power.

Tim Murphy

Hey Ryan, that was a really good post. A lot of good valid comments, and ideas.

I have customers of all kinds. Some want as much "bling" as they can get and others would rather it all be painted flat black. Everyone has one common denominator and that is it better work as advertised for price they a paying.

I have modified the kit for special customers who want to do some of there own thing. Now that I have it developed to the point it is at today, it is easier for me to allow modifications to the kit as long as the fundamentals of the performance integrity is not compromised.

You mentioned fans; yes this is an area that a customer could invest in custom shrouding for a better solution. For a kit, it is not economical although in the future there may be an upgrade option to do just that. Mods like this can get a little pricey but I would be happy to sell a kit minus the fan package. Save about $300 on a stage 1 and $400 for stage 3.

You mentioned intercoolers; If someone had their own design for an intercooler I would be happy to send without and deduct accordingly. Funny you brought up having tubes on both sides of the plenum... I have plans for a dual intercooler on my 5 speed project car that would do just that. That doesn't mean someone else couldn’t do that themselves before I can get to it. (It might be awhile) I am already in the works on providing a dual intake to the sc in about the same manner.

I don't want to deter you from your ambitions for a turbo because I think some day that will be a good viable option for people. As the guys that are involved with that already know, it takes a lot of time and perseverance to get something into a "kit" form that is going to satisfy the end customer when they lay down their hard earned cash to get one.

The only time you might see me throw up a flag for a new product is if I feel the public is being misled. I am in no way saying that is the situation here because I don't feel that way at all. I have nothing but respect for the guys that are putting these turbo systems together and when the time comes they will back up their claims with the facts and customer testimonial. What comes to mind is the Andy Keel situation.... Some guys got exactly what they knew they were getting and were just fine with that. Others, not so good and they were left holding the bag and out in the cold. I never want to see someone remorseful when they buy one of my kits or anyone else’s for that matter.

Alright, enough out of me…. You guys (and gals) have a great day!

Tim Murphy

Actually it is not the "S" or "T" that affects the sound, it is the designation before that, like "V1" or "V2".

The V1 has straight cut gears and has been around for a long time. I think this is the sc that people have heard most and equate that as to what they all sound like.

The V2 has helical cut gears and is much quieter. There is still some whine going on but you don't hear the backlash of the straight cut gears, especially at idle or light cruising.

The T-trim is commercially available with the V1 gears but Vortech is building me T-trims with the helical cut gears for my application. This is the sc I use on the Stage 3 cars, V2 T-trim.

PorKen

L-Jet compensates for most mods, no need to adjust fuel pressure. 24# injectors will fuel over 350 rwhp.

Put in colder plugs (WR6DC), and bump up the ignition timing 3-6°. The cam timing isn't adjustable.

Don't go big on the exhaust. 2" head pipes into a Y, and 2½" single back is fine. Grind out the cast iron manifold outlets to 55mm, or use 85-86 SS logs.

RyanPerrella

Tim,

I would love to hear what your planning for a twin induction setup and would love to know what kind of kit you could put together to suit my needs. I was previously really interested in Mark Robinsons setup but its been quite awhile and without any dyno charts i am loosing more and more interest. Your system also has the benefit of a huge customer base and that does count for allot.

I think i could come up with a more elegant or perhaps just different electric fan setup then what you currently have. I know it would in the end up costing more but i think i would go in a different direction and as such would hate to pay for parts i wont need or want.

I am not ready to spring for the system today so maybe by the time i'm ready in a month or two you will be farther along on the induction system and i wont have to reinvent that wheel as well.

I do appreciate your openness and am glad your so forthcoming with your future plans. Maybe my power adder will be your kit.

I will say that although the Kuhn seems on paper to put out allot of power, i cant get over all that damn intake piping spewn all over the engine bay. We will see what that kit costs if there ever is a kit but I think the best bet is to have an many options as possible.

Lucky us, with the newest of 928's being 13 years old I think there are more options now then ever. I also think this 928 thats considered a bastard Porsche has a better support group and much better suppliers then much more popular and more prevelant porsche models. I think this car can live a very very long time.

Courtshark

I guess it's inevitable that a remote turbo thread turns into a supercharger thread here.

yawn

Tony

The rear turbo is cool, but i cant stand the "attached" look underneath in the back !!
Also, the sound. Drowns out the BWAAAAAAAAHHHH in its original intend format.
Im all for HP and TQ, so onward with it all i say. Everyone has and will pick their "system" of choice.

Shane

But Tony why should one choose...

Get one of each I say

Hilton

+1 on this..

I was wondering whether using the mid-muffler location would work, whilst otherwise following the RMT setup?

Specifically, combining the concept of X-Pipe (or Y-pipe) and Turbo at the same point, followed by the regular resonators/rear muffler (or cats/RMB/etc.).

The biggest problem I can see here would be that a shorter intake path might increase the need for an intercooler.. but I also have zero practical turbo experience, so there might be a bunch of other drawbacks to this idea.

On the plus side, it would allow for more options for noise control/quality adjustment, less potential for damage/vandalism of the vanes.

RyanPerrella

I also dont like the rear mount turbo. I think looking at the exhaust pipe and seeing an impeller is nucking futs!

I like the mid mount because its totally hidden

but frickin hacker and tim are making me have second and third thoughts about the centrifugal. (I hate spelling centrifugal)

atb

The system could be fabbed with a stock looking tail pipe if its just the cosmetics that are a turn off for you. The P-9 guys wanted a distinctive tile pipe, but you could easily route the waste gate back into the exhaust tip or just have it dump under the car. The shot you're refering to showing the impeller is taken from an angle for drama, it's not like you can see the impeller while standing behind the car.

I'm not trying to tell you what to like and not like Ryan, I'm just pointing out that the cosmetic characteristics that you don't like were design choices by the designers, and that the system wouldn't have to be run in that configuration. I can also state that I've never heard of anyone tampering with an RMT set up on any of the cars that have been running them, and they've been running around for years. To be honest, I think that most people aren't even going to know to look, and those that do probably aren't going to know what they are looking at. JMHO.

The_Remora

I think remote turbo is an cool concept, seems to have a lot of things going for it, hope they develop it.

atb

I can say this for sure Chris, the 928 is particularly well suited for the application.
A kit is what these guys are shooting for, and hopefully they will get there before not too long.
But from what I've seen they aren't going to offer anything short of a turnkey kit. That is a very tall order. Many have tried, or are trying, but the facts are that theories, technical ability, and deep pockets aren't enough if any are in less then ample supply. The fact that Murf has the only commercial kit out there is true testament, regardless of what you feel about in the S/C vs. Turbo debate. If you want bolt on boost, Murf has been the only horse in the race for years. Whether that will be true in the next six months is yet to be seen, but for now its true and all the other methods of bolt on, turn key, boost in kit form, are just speculation.

gruffalo

www.ststurbo.com sell a generic RMT kit for $2k, anyone looked into that yet?

http://www.ststurbo.com/universal_system

89 928 turbo

Yes,

we did and this has been the base concept model for our car. They (STS) were not interested in developing a "kit" for 928's as was our intial suggestion since the number of cars were so limited (camaro's and corvette's) and so we took the "base kit" as the starting point....in the end, the turbo and oil pump were the primary usable components, everything else has been custom made and fitted.