is there any sort of dump valve oh anything that gives the rally chatter sound without going mental on external wastegates etc

 

Bin the metering unit

 

Yes get rid of the MFI & go EFI, the guys on here will say get rid of the dump valve aswell, the Rs turbo don't really need it.

 

just converted mine to efi and the chatter is awesome dump valve went straight in the bin

 

EFI It

 

EFI mate all the way!

The air filter you choose to run will also make a difference to how noisy it ends up.

Used to love mine, I had an old lady with two shopping bags jump head first into a driveway when she heard it coming from behind her!

 

Like this?



S.

 

Will you never get chatter without EFI then?

I thought that like 1 bar boost and no dumpvalve also would give chatter on MFI?

 

Maybe a faint flutter but nothing more

 

my bonus turbo was efi...no dumpvalve and a pipercross filter...

loads of chatter!! turned so many heads when they heard it coming from a mk4 bonus!

wish id have kept it!!

 

the metering head drowns out the noise, so you know what you have to do

 

god, that sounds so fookin evil...!!!!!

 

euhh Finish my project first

haha tnx for the reply

I want to stick to the MFI on my car to keep it how it was back in the days

 

my car have little chatter on 0.6 bar without any air filter tried this only once, to risky

 

I love the chatter

 

mines loud as fook on cossie management

 

Why's it too risky?
The RS500 touring cars never ran dump valves - I think their engines and boost are above what most people run.

D/V's are NOT a must-have on RST's. Christian's car runs without a d/v and is over 300bhp and doesn't have running issues or turbo problems.
(Hope I haven't jinxed you Chris )

You will hear it with mfi, but not as much as with efi.

 

The way i read it, he saying it was to risky running the car without an airfilter

He didnt even mention a dump valve in his reply

 

Hmmm..my bad. Long nights at work, still tired & didn't read it properly Missed the bit reference the air filter.
Dragster - don't run it without an air filter - it's too risky

I must have thought he meant ran without a d/v. That's the question most people ask - regarding the need for a d/v.

I think he's edited it to make me look silly
me <

 

no problem mate yes I dont drive it without air filter but once I tried without filter and have chatter , at about 0.5 bar of boost but wasnt so loud. not recomended option to run it without air filter but I just want to say chatter is possible to have on mfi... but not so loud as I want need efi...

 

i would say they are a must have if you run a gt series turbo due to the weak shaft and christian gt turbo has died dont know the cause but turbo stall at 1.7 bar wont help... t series turbos apart from a t4 dont create enough back pressure to need a dump valve..

sean

 

but mfi is shite compared to efi ,car will run miles better with efi i can understand keeping things orginial but not when something like the management system would hold the car back..

sean

 

I think 200 bhp is more then enough for a car that is also for course de elgance. This car is too much a beauty to for pure performance, next car will be

 

My s1 ran 17psi with standard air box and fluttered

My S2 with a pipercross cone and standard exhaust flutters

My old fiesta turbo had a T3 hybrid and a Grp A k&n and that sounded like i had a pigeon with a megaphone under the bonnet.

Efi for maximum chatter.

 

Yes, maybe but I was talking more about the cosworths running bigger turbos and lots of boost being more likely to need them compared to the RST's.

 

You wont much if any chatter on MFI because as soon as you let off the throttle the flap on the metering unit closes and muffles the noise.

For me, if you convert to efi just for the noise its a bit of a waste of time as mfi is good as long as you can put up with a dump valve.

If converting for power, then i suggest Go-tech. Prob cheaper then the whole malarky of swapping loom, ecu inlet manifold blah blah blah.

Just plug it all in, get it mapped, throw the metering unit down the toilet and your off.

Ask Jamie at Jamsport about it.

 

My car chatters with an MAF


http://www.youtube.com/watch?v=rW2FvwYfqKA