M Coupe with Eurosport Twin Screw

[Neil]

Gents -

The other thread has gotten SO LONG that I'm reposting the dyno of my M Coupe in a new one. If inappropriate, let me know and I'll delete.

Dyno link:http://www.eurosporthighperformance.com/pdfs/Neil_with_fuel.pdf

Neil

[NoSoup4U]

Do you think you will be faster or slower in auto-x now? ...

[QuestMCoupe]

Holy crap! Thats a lot of power. Can you post what Stage you have and maybe pics in this thread?

[rukman]

Neil...i'm jealous...i'm like a kid on x-mas eve waiting for the twin-screw kit to come out for the rest of us

any interesting stories to relate about the trip back home under twin-screw power?

Rukman

[marc1119]

Forgive me for the observation, but I think we should have a topic called "Twin Screw" on Bimmerforums right above "Forced Induction".
Josh can get all his free advertising there, and I can commit suicide after reading one more post about the twin screw. :

[NickG]

Hey Marco, may I suggest you make your post in the Board Suggestions, Questions, and Official Surveys part of the forum. It might get more response from the board admins. Here's the link:

http://forums.bimmerforums.com/forum...play.php?f=122

BTW, if there's a topic that you don't like to read about, may I suggest you don't click on the thread? I find that's an effective way of avoiding the feeling of commiting suicide with topics that I don't like.

[marc1119]

I guess my point was Nick ,that after Josh basically called my car a sled, I see numbers that are not really what I thought Josh would compare to my car to. Perhaps if I post MY dyno sheets, I can get OOHS and AAHS from the crowd also.
Josh said a centri blown car would " only see the rear of the twin screw car",looking at the numbers I beg to differ and after Josh put the twin screw on a PEDESTAL, I am not that impressed, since Josh thought very little of my car.
And that Twin Screw power was with cams?My My.

[DocWyte]

At 8.5 lbs of boost, seems pretty impressive to me, as does your result....

[marc1119]

I agree Josh, most of my dynos yeild 10.3 lb boost, 10.4 max. I did not have the benefit of Jim C tuning and Schrick cams either. I feel Josh McMurray should not be so quick to discount the benefits of a centri blower, because he made it seem that his car would "blow away" anything that had a centri in it. I did not believe him then, and I do not believe him now.
Just my thoughts.

[marc1119]

Thanks for the counseling, Dr. G.

[Josh MacMurray]

I guess my point was Nick ,that after Josh basically called my car a sled, I see numbers that are not really what I thought Josh would compare to my car to. Perhaps if I post MY dyno sheets, I can get OOHS and AAHS from the crowd also.
Josh said a centri blown car would " only see the rear of the twin screw car",looking at the numbers I beg to differ and after Josh put the twin screw on a PEDESTAL, I am not that impressed, since Josh thought very little of my car.
And that Twin Screw power was with cams?My My.

Nice try Marco, but you are missing a key part of my statement....you know the part where I say psi for psi. Right now we have 362whp vs your 374whp on the same brand dyno and we are running at least 2.5 less pounds of boost (on Neils car). Performance is all about efficiency and your car with your kit just doesn't have the efficiency of our kit. Think about it, 2.5 psi for your car netted you 12hp over our kit. Better yet is your car really going to spank the Twin Screw with it's non-linear centrifugal boost?? Fact is your 10.5psi car is still slower than our 7.5psi Twin Screw. No hard feelings Marco....just the facts. BTW Dan's car with a $7K Twin Screw system on 8.5psi and no camshafts would still spank your car. He saw 347.5hp SAE corrected and 364whp uncorrected on a dynojet. Peak boost doesn't = acceleration or fun for that matter. Dollar for Dollar the Twin Screw will beat your set-up (that's probably the part that really pisses you off). Unfortunately there isn't a thing that folks can do to keep you from getting mad or rejecting the facts.

[marc1119]

Josh, I thought the twin screw made 8.5 lb boost and mine 10.3-10.4. a difference of 1.8-1.9 lb boost. I was really referring to the torque Josh. I make 280 RWT @4000 RPM and peak @ 316 and still make 280? @7000 RPM.
I am happy for your cars, just stop discounting mine. I do not have cams which MORE than make up for the 1.8 lb boost.
You really do not know that your car will SPANK mine and I am not pissed off

I am just making observations. I know you need to advertise and sell your products, and I know my car is the EXCEPTION and not the rule on centris, but please stop dismissing my car. Josh there is always someone that has a faster car than you and ME.
I just hear in your words that NOONE could possibly match your power in your twin screw and that is simplr delusional
I respect your work and your dedication ,I just thought the Torque on your car would have been higher, that is all.

[radelow]

I think it's great that Josh went and thought outside the box and came up with a great competitor to the Vortech based kits. The whole goal here is to move the technology forward and always improve upon whats been done.

With that said I will also point out that the guys who created the vortech kits for our cars did it a long time ago and what they achieved is also worth noting. Let's cut the bickering back and forth and stop belittling each others kits. Sheesh...The main point here is we all love BMW's and especially the E36 M3.

If I had the money I would seriously consider Josh's kit. As it is I am just going to work on improving the deficiencies the vortech kit has.

[marc1119]

Last time I got into it with you guys are got "timeout"for a week. I know it is politically incorrect to question findings on the twin screw.I am stopping right here. I think you have a great product, I know you worked your ass off to produce it, I hope you make tons of money selling them, just not quite so cocky on "what you think people feel, who do not have a twin screw" and "every car will get spanked by your twin screw" and I will be really Ok with you and your product.

I am done. Truly good luck with your stuff.

[marc1119]

Mark, Josh and Stimpee,thought outside the box, let's not leave out Stimpee!

[Neil]

>let's not leave out Stimpee!

Marco, certainly agree with that. In fact, it was Stimpee who turned me on to the potential of the twin screw.

BTW, one of other reasons I went with the Eurosport kit is that I live in a jurisdiction that takes readings from the OBDII port as part of inspection, so I wanted to remain OBDII compliant.

In DC and a growing list of other places, they don't even check actual emissions!

In any case Marco, you should be (and are) justly proud of your centrifugal [EDIT: misspelling corrected] system. And I, of course, am extraordinarily pleased to have a twin screw -- and to join you in the boosted brotherhood .

[radelow]

Sorry to exclude you Stimpee... not me intention.

[marc1119]

Neil, you sound like a perfect gentleman . Thanks and Good luck with your car.It sounds like it must be awesome.

There is a definitely a place for centris and twin screws to co-exist.And I believe they will. It does NOT have to be one or the other.

It would be fun someday to have a dragrace though.I have had some fast cars in my day and I am certainly pleased with my little centri as well.

Welcome to the disease!!!

[Josh MacMurray]

Josh, I thought the twin screw made 8.5 lb boost and mine 10.3-10.4. a difference of 1.8-1.9 lb boost. I was really referring to the torque Josh. I make 280 RWT @4000 RPM and peak @ 316 and still make 280? @7000 RPM.

We add 1.8-1.9psi to Dan's car and it will make more power at every rpm by comparision. You won't have to wait long for proof either as we will be testing 10+ on Dan's car prior to installing cams.

I am happy for your cars, just stop discounting mine. I do not have cams which MORE than make up for the 1.8 lb boost.
You really do not know that your car will SPANK mine and I am not pissed off

Your right it would be subjective and assumptive for me to say that you weren't happy with your purchase and "SPANK" is a subjective term so I'll take that one back also

I am just making observations. I know you need to advertise and sell your products, and I know my car is the EXCEPTION and not the rule on centris, but please stop dismissing my car.

The last thing our charger kit needs is more advertising. My biggest concern will be keeping up with sales. As for dismissal, by now you should realize that it works both ways on the forums.

Josh there is always someone that has a faster car than you and ME.

Gee I never thought of that???

I just hear in your words that NOONE could possibly match your power in your twin screw and that is simplr delusional

Once again mischaracterizing.....this time in all CAPS..."PSI FOR PSI". Let's add a couple more quotes for future argument sake....."OCTANE FOR OCTANE"......and my personal favorite "DOLLAR FOR DOLLAR"

I respect your work and your dedication ,I just thought the Torque on your car would have been higher, that is all.

10.5psi it will be higher (than yours). Better yet in the sake of time and fairness send us a dyno graph of Centri with 8.5psi so that we can understand your definition of "higher". As soon as I have a run of Dan's car at 10.5psi on 91 octane without water/alcohol injection still with a $7K kit

[marc1119]

Nuff said. thanks for your reply Josh. The numbers will prove themselves out on your kits I am sure.
I am just happy you stopped with the "spank" stuff. That was based on opinion only, and I was not willing to accept that. Thanks

[///MCubed]

Stop the bickering, and bow down the the power of turbos

A twist of a knob and all troubles are solved.

PS. Great numbers on both the twin screw and the centri.

[mrdoenutz]

Stop the bickering, and bow down the the power of turbos

A twist of a knob and all troubles are solved.

PS. Great numbers on both the twin screw and the centri.

lol, thats great!

[EMC]

Stop the bickering, and bow down the the power of turbos

A twist of a knob and all troubles are solved.

PS. Great numbers on both the twin screw and the centri.

: I'm glad I wasn't the first one to say it... : Now lets all be friends.

[Josh MacMurray]

: I'm glad I wasn't the first one to say it... : Now lets all be friends.

Ok just one more cause I can't resist....

ACELLERATION PER LB vs DOLLAR PER DOLLAR vs HEADACHE PER MILE vs ACTUAL KIT TO KIT vs TORQUE CURVE TO TORQUE CURVE. Pulley's for the Twin Screws are cheap and won't blow the shape of a torque curve.



BTW I beleive it is pronounced TOBO and it really does offer MO POWA I'm just not looking for the sound of a BOV nor am I looking for CWAZY DWAG WACING capability aka CWAZY EXPENSIVE LOWER COMPRESSION MOTOR BUILD REPLACE ENGINE MANAGMENT HILT WHAMMY BLUE BULB OR TURN KNOB BLOW MOTOR WIERD CHEMISTRY FUEL MIXTURE OCTANE PEE PEE WACING

I'm looking for the often maligned little thing called FUNCTION and FORM. Us old timers (just turned 34) aren't into blinking LED guage goodies and pachinka-slot-video-poker-machine cockpit dressings. We're kinda fuddy duddy and like things like functional torque curves and good lap times. Believe it or not the first prototype Twin Screw set up in Dan's car didn't even have a cockpit mounted boost guage and he left his chemistry set home and he didn't bother to play with his knob while driving down the freeway. Kinda strange.....'magine that

Now back to our regularly scheduled programming :

[Justin(OKC)]

Although I'm perfectly happy with your cam kit in my car, I have to wonder what the twinscrew experience would be like, and how reliable it would be at the track.