The great big MK6 Golf 118TSI tuning thread

[rygreen93]

Some pics here of the 1.4 twin charge setup: Downpipe Ø63mm VW GOLF VI 1.4 TSI TWINCHARGE (160 Hp)

Doesn't look like there is as much room as on the GTI but with some imagination, and someone willing to take the risk and spend a little money im sure you can sort something out.

Pipe diameter looks ok, could possibly be 1/2 inch bigger, but its not too small that its being a major restriction.....but that big ugly cat on the other hand.....

From those pictures do you reckon that looks like the stock pipe is around 2.5inch or smaller? Just trying to figure out the best option as I don't want to spend a massive amount of money on the DP if it's not going to yield a huge difference compare to just putting a hi flow in.

Also if I use a hi flow cat I can keep the stock heat shield.

Cost of a full DP installed will be about $900 + cost to heat shield it + $200 for stage 2 tune.

Cost for hi flow only $250 installed + $200 for stage 2 tune. Massive difference in $$$ there.

Sent from my SM-G920I using Tapatalk

[Rawcpoppa]

The great big MK6 Golf 118TSI tuning thread

It will throw a code if you remove the catalyst or if you choose a catalyst that doesn't perform as the oem one does.

The o2 sensor after the cat will sense more environmentally unfriendly emissions and the car will throw a code.

The imitator o2 sensor fools the car into thinking things are ok. Another option is to flash the ecu and tell the car to ignore the error.

[ope126]

Some pics here of the 1.4 twin charge setup: Downpipe Ø63mm VW GOLF VI 1.4 TSI TWINCHARGE (160 Hp)

Doesn't look like there is as much room as on the GTI but with some imagination, and someone willing to take the risk and spend a little money im sure you can sort something out.

Pipe diameter looks ok, could possibly be 1/2 inch bigger, but its not too small that its being a major restriction.....but that big ugly cat on the other hand.....

Brondex Downpipes look really well made. I can see that there is a 63mm and 70mm option available.
Would you need a tune with this also (does it throw codes etc.), or would it be ok to "hook up" to the rest of the "standard" exhaust system?

One thing that has me confused though (as per the website), "The imitator of oxygen sensor will possibly be needed"...

[Rawcpoppa]

A guy on vortex took out the down pipe and chiseled it out. It was for a beetle in Europe that used the twincharger. The pics from that thread died I believe.

Will look thru hard drive to see if I saved anything about it. The procedure didn't seem unreasonable.

[Lucas_R]

Some pics here of the 1.4 twin charge setup: Downpipe Ø63mm VW GOLF VI 1.4 TSI TWINCHARGE (160 Hp)

Doesn't look like there is as much room as on the GTI but with some imagination, and someone willing to take the risk and spend a little money im sure you can sort something out.

Pipe diameter looks ok, could possibly be 1/2 inch bigger, but its not too small that its being a major restriction.....but that big ugly cat on the other hand.....

[Lucas_R]

The great big MK6 Golf 118TSI tuning thread

Ive never personally seen the cats on a 1.4 twincharge engine, but have many times on Mk5 Golf GTI, Mk6 Golf GTI and Mk6 Golf R (which all appear identical) and can tell you they are a brick wall (very dense and restrictive).

On the GTI and R the downpipes actually have 2 cats - one right up near the turbo (which can be DIY removed easily in about 5 mins to reduce restriction and increase airflow) and a secondary cat down under the car. This secondary cat could be easily cut out and a new hi flowing cat welded in its place.

Surely something along these lines can be done on the 1.4 twin charge?

Pics for inspiration (my Mk6 Golf GTI)

[The_Hawk]

I'd be interested in understanding what the power output of a stock cat vs high flow vs no cat on these engines is.

[Rawcpoppa]

I suspect the cat holds you back more than the pipe diameter. Some guys keep the stock pipe but knock out the car totally. Car would throw a code for no cat but you can get a flash for that.

[rygreen93]

So Lucas suggested using the stock downpipe with a high flow cat. What is everyone's opinion of this? Is there really much more of a benefit going for a bigger pipe or is 80% of the benefit going to come from the cat.

Sent from my SM-G920I using Tapatalk

[rygreen93]

Not much haha. Hoping to find one off a wrecked manual. I saw one for $200 and missed it. All the rest have been a bit much. I don't mind if it's a GTI or R one.

Sent from my SM-G920I using Tapatalk

[Rawcpoppa]

Hey Mk R. Why didn't you get me one? I'm still looking

Sent from my SM-G920I using Tapatalk

What's your budget?

[rygreen93]

Hey Mk R. Why didn't you get me one? I'm still looking

Sent from my SM-G920I using Tapatalk

[Mk R]

Stock internals?! I'm sure if I just browse the purchase page for a k03 hybrid my Pistons will crack.

Ha! That's the funniest thing I've heard all day.

I got an oil leak just by installing a flat bottom steering wheel this month.

[The_Hawk]

Stock internals?! I'm sure if I just browse the purchase page for a k03 hybrid my Pistons will crack.

Yeah, if you read through the thread, it's not until later on he moved to forged parts.

At the start is was 240whp on stock internals, almost 170kW at the wheels isn't too shabby for a 1.4

[Rawcpoppa]

Stock internals?! I'm sure if I just browse the purchase page for a k03 hybrid my Pistons will crack.