non symmetrical Turbos

[S2tuner]

IMHO you're going into too much of an unknown territory there Dave.

unknown for who..him or you..dave have you been upsetting people..?

Not unknown territory for me, I know pretty much all about the engine and ECU since march 2005....

[DamoM]

IMHO you're going into too much of an unknown territory there Dave.

unknown for who..him or you..dave have you been upsetting people..?

Not unknown territory for me, I know pretty much all about the engine and ECU since march 2005....

Thought it would be known territory Mihnea! How can any of these concepts apply to the 2.7tt?

BTW have ben emailing Doug as have some RS6 turbos and want to go the 600 bhp route but not heard anything back.......

[dodgydave]

IMHO you're going into too much of an unknown territory there Dave.

unknown for who..him or you..dave have you been upsetting people..?

When did this forum become MRC 's (Obviously, World Greatest Tuner ) own playground to throw their rattle around ?

My sincere apologies for missing that moment ....YAWN!

[S2tuner]

Dave, it's not about this forum being ours or not (and of course it isn't), however, I cannot stand people making incorrect statements, just because they woke up one morning and they thought "oh hey, I'm a tuner now". ok?

[dodgydave]

I'm terribly sorry I didn't make myself clear earlier.

If you want to get more than 530hp out of a 997 reliably then you need wastgated turbos. That's all I meant. It's a known fact that the 996 engine is more reliable and suitable for big power numbers.

I never said I'm a tuner

[S2tuner]

Dave, you're wrong because the GT2 has 530 standard and at least 1 or 2 german tuners already get reliable 630 PS on VNT turbos.

[philipwalker]

The sequential turbos will work if you use a simple reed valve arrangement. Works well on many duel superchared and turbo engines
The valve would be open with the pressure from the small turbo untill the pressure from the larger turbo matched and became greater. Leaving the small turbo spinning on a recirc system.

[dodgydave]

Dave, you're wrong because the GT2 has 530 standard and at least 1 or 2 german tuners already get reliable 630 PS on VNT turbos.

Sorry, I meant 580hp but with bigger VTG turbos. Didn't know it could be pushed as far as 630hp.

[confusionhunter]

Actualy Ive been here and done that... I looked at fitting 2 VNT28s from Turbo technics to the s4 engine and oddly enough discovered Minhea had a close friend working on the then development 997 turbo engine after I told him what I was up to.

The issue isnt that the VNTs cant produce big outputs, the issue is you cant buy a varied enough size of VNT turbos. Ie I felt the VNT28s may have been a little too small for silly power but the next size up was VNT38, which is simply far too big! The problem is that the inherent nature of the VNT is that is can cope with a wide range of engines straight out the box, so you cant be specific with requirements yet, like manufacturers can or small tuners can be with non VNT turbos. Plus TT got a new manager and the prices went up and made it all a bit cost rich.....idea promptly binned.

ALso it was mentioned on the first page that the exhuast doesnt really matter in the context of sequental turbos... It does: the EGTs will vary betwen each bank, which means at full chat you'll have a comfy bank with the big turbo and melting piston bank with all the back pressure from the small turbo... not to mention the small turbo will get it arse spanked from being over worked. Sequential turbos will only work with a common manifold, nice idea but it wont work. Plumbing nightmare on a V engine thats why its a goer on straights or wankels.

[S2tuner]

I never said I'm a tuner

How much am I allowed to laugh at this statement, especially in the light of today's posts on some other forums??? Would you mind answering, mr "I never intended not to get you to map my car" or mr "I don't plan on becoming a tuner"???

Beware people, mr dodgydave has gotten his hands on a few tunes for B5 RS4s and is going to attempt making his own tuning based on those tunes. The only problem is that he has never received the original tuner's authorization to read/copy those files, and that is called intellectual property theft!!!

[s4woody]

question: how would anybody become a tuner when people are being told the maps have been aquired and are not trust worthy..
secondly: what happens if the tuner tries these maps out and they turn out to quiet good..
now i understand experience is a good thing and you have to start somewhere..
i no nothing about mapping cars although i have been working on cars since i was 14 years old..
im not a fitter im a god old fashion mechanic.. i thought tuner wars was summit i watched on the discovery channel..or was that tuna..?

[S2tuner]

Woody, the question isn't if a file is good or not, it's whether it's been stolen and how honest that is. Period.

[buzzard]

blimey.... just come in to this forum and... its rather hot dont you think...

[S2tuner]

It could be and I apologize for making all this public, but I guess I got rather seriously upset by a few things discovered in the last few weeks about mr dodgy dave.

[s4woody]

mihnea im not prying my friend just curious as to the depth of your feelings..and looking at the above post its pretty clear how deep it goes..