new proptype dp that i made

[bigaaron]

^ agreed. when i had my boost set to 15psi on my EBC (built into the MAFTpro), it wouldn't creep at all. rock solid boost, no problems.

when i had it set lower (about 8psi, it would creep to 10) ever since i increased the boost to past 10psi, i've had no creep issues at all.

but it's always nice to see more people innovating.

-shaeff

It is cool to see new designs and people coming up with fresh ideas, and I am interested to see Nashman's dp.

 

[MK3Brent]

Sorry but that is false, please explain how that could be true..

I didn't feel like posting earlier, but:

I don't know if it's scientific, but it definitely feels that way.
From stock dp to aftermarket 3", you feel a slower response at WOT... however is quickly compensated on top end.

 

[TurboStreetCar]

didnt BIC come out with this a few years ago?

 

[peteyturbo]

Sorry to break it to you but that REALLY is not true..Less backpressure will only HELP you turbo spool quicker..And as far as response off boost, less backpressure will will help marginally, you will not benefit from ANY backpressure on a turbocharged engine, the turbo itself provides more then enough as it is..

I didn't feel like posting earlier, but:

I don't know if it's scientific, but it definitely feels that way.
From stock dp to aftermarket 3", you feel a slower response at WOT... however is quickly compensated on top end.

 

[aznwaterboy]

Instead of creating a new 3" dp, can't you just use a normal 3" dp and weld a plate that divorces the wastegate from the turbo? IMO that would be easier to do but can it be done? That way people can use their own 3" dp's and just weld a plate to the dp.

 

[MK3Brent]

Sorry to break it to you but that REALLY is not true..Less backpressure will only HELP you turbo spool quicker..And as far as response off boost, less backpressure will will help marginally, you will not benefit from ANY backpressure on a turbocharged engine, the turbo itself provides more then enough as it is..

I believe the WG "block" on the stock elbow had something to do with it.

 

[Nick M]

Nashman is claiming that the divorced dp's creep because the wastegate's exhaust does not have vacuum.

He says that the non-divorced "megamouth" downpipes lose some low end power compared to the divorced.

His solution is to weld a divider plate in a "megamouth" style downpipe in hopes of having the best of both worlds.


Nash: How will this be any better than a partially divorced dp?

Damn, I need a nashman translator.

 

[starscream5000]

I'd like to point out to you all that if you check a BOSS turbo from suprasport.com they use the same idea in their turbos that NM is using. A bar is cast into the exhaust housing to separate the exhaust gases to reduce turbulence. It's really a good design and I've seen it on other setups before. I would just make sure that the splitter NM uses doesn't interfere with any splitter that is already on any aftermarket bolt on turbo that you all may be using if you're considering doing this.

 

[Mrbaboon]

Damn, I need a nashman translator.

I whipped up version 1.0 awhile back. ma71supraturbo has the newly updated 2.0, with super mega dyslexia-infused-typing decoder action, but even with that updated niceness of a translator it still comes out fucked.

I went for a ride in Ryan's car on Saturday. Oh boy its got some pull to it after he got rid of that HKS piece of shit, although I do like my Nashman custom divorced down pipe more (yes he made that one too), and I only creep from 8 to 10/11 psi.

 

[becauseican]

Well there is some false statements on this thread about DDP's, and dp's but it has already been pointed out by others. A very small percentage of DDP users have boost creep, I would say maybe about 5%. I am still trying to nail down the reason why most people dont experience this while some do. There is just to many variables with different vehicles with exhaust systems, intercooler upgrades ( or downgrades) intercooler piping, condition of the engine, turbo, wastegate actuator, and the severity of cracks in the turbine housing.

But good luck the mk3 downpipe market is already quite competitive and watch out, the chinaman can and will copy anything!!

Randy

 

[aznwaterboy]

Not to bash on your product, but wouldn't a rerouted ddp do the same thing that you're doing Nashman? Because rerouting the ddp would create a vacuum for the air from the wastegate, theoretically, unless I'm mistaking something.

Offtopic - Awesome job on your short-shifter, I'll probably be picking one up once I get a 7mgte into my car.

 

[ma71supraturbo]

that is sweet, who makes that?

The partially divorced DP? That's made by BIC

 

[NashMan]

oh i do nto intended to sell this in any way just shareing an idea for people to try

oh and the vacume whould be strounger if the pipeing is shorter

and if you dont like it just chop it off and then it si mega mouth again

just an idea fro you guys to try out