944 turbo exhaust

[T3rra]

What's are people's thoughts on the LR 4" big flow systems.

I thought 3" was all that was needed however the price off fab speed items coming in around 1k plus £350 for postage b4 import duty I took a look on lR. There systems arnt as shiny as the fabspeed items are a sleeve fit 2 peace and 3 peace system.

The 4" lr system has dyno chart showing the 4"
Back box section actually bring the power in 350rpm earlier the 3" all the way back

Also have the wastegate pipe at the stock location rather then earlier

Has got me wondering about the lR items. Which are only £550
Plus tail pipe which I may source over here.

 

[944Scott]

Where they testing it on a stock engine? I thought you only went for 4in if running serious HP.

 

[T3rra]

Yeah stock engine the same car There's 4" and then the big flow 4" Dyno chart is under 4" system. But I would prob get big flow as its one jump from 3" 2 4" Rather then 3/3.5/4 and the waste gate is tied in to the larger 4" Section. They sell fabspeed as there 3" Polished options which are prob slightly better then there 3" System but most power comes from 3" decat test pipe. So I can see why the hp difference would be measurable Fabspeed also use to offer 4" back box as well It would seem 4" system starting earlier should be better yet. Not sure what the shipping rate is on the LR but is £350 On fabspeed b4 duty. Have u noticed much impovement for yours Scott

 

[944Scott]

Have u noticed much impovement for yours Scott

Actually yes. It definitely has more torque, boost seems to come on sooner and the car feels smoother and uses a little less fuel. Before the rear section was made I was running with 3in outlet pipe, 3in decat pipe and standard rear section. When running in the manner the car would make a sort of warp warpp warppp sound under load and this has now gone too. Now the exhaust has coked up a little it has quietened down quite considerably so im really impressed considering it only has one smallish silencer.

 

[T3rra]

That's quite interesting, was always under the impression the major part was the decat and 3" test pipe. Be nice to hear a sound clip. Doing it again would you go same route or buy a different off the shelf system

 

[T3rra]

From my talks with fabspeed they believe the rear section in 4" would prob lose power at my intended power level goal round 400hp

 

[944Scott]

I do have a couple of poor quality sound clips which when I get back from the pub I will try and upload. Doing it again I would go the same route however I was a little unhappy with the overall finish of the decat from H&S and I cant help thinking it would have been cheaper having it made on the day at the same time as the rear section by Vortex. They were very helpful and Natalie actually reduced the cost of the system slightly on the day plus if I had done it this way the silencer could have been fitted elsewhere. They did comment that they normally fit the raceflo system before the silencer but because of my reluctance to cut into my decat pipe it is fitted at the rear of the car with the silencer just before it, I love the look of it but they did say I might be losing a couple of HP.

 

[T3rra]

Why wasn't it fitted the other way? Silencer dose look low in it current position. Do you think you need a silencer ? Would it effect power levels? I'm slightly worried on the noise level. Don't mind a nice roar but don't want a consent drown

 

[944Scott]

Its purely down to me not wanting to rework the cat pipe. It does hang a little low and my car is lowered but I, yet to catch it on a speed hump. My garage has a ramp leading up to it and it does not catch on that either. Its not that noisy and the Raceflo actually seems to suck so much of the gases out that it gets quieter at speed, no real droning []

 

[T3rra]

Suck? Would the cat pipe needed anything if you had them weild in each others place on the back box section? I wondered why none off the aftermarket exhulst are more mellow at the bends expecally after the down pipe where it moves to the centre

 

[944Scott]

The raceflo section of the exhaust is a series of conical shapes designed to vacuum gases out the back at speed, im struggling to upload my video clips to the internet []