BOV for Polo GTI

[noone]

With a custom 2.5" downpipe, the sound is deeper (very noticeable at idle and lower revs) with a stronger burble when backing off at low revs. The cost was much less than $400 from recommended shop.

I don't know my specific power gains, but expect somewhere in the 5-10kw more.

I think the 3" would probably sound deeper and amplify the changes, but as the flow between the 2 1/4 inch and 2 1/2 inch is greatly improved and is adequate for upto 200kw (from a hodge podge of reading) and there was some concern about loosing Torque with the 3", didn't feel the need to go bigger.

[mikepologti]

on very good authority i here a 3' downpipe makes the car sound like a tractor and theres no performance gain unless your going a big turbo conversion. the engine note is noticably deeper without being offensive.

[Adam]

Ok!.

skipped the ebay seller, and went to an Australia Reseller that had a special deal another forum.

First impression. The SSQV sounds mad above 3000-4000rpm, but generally it's LOUD!

Installation was a breeze. Just a note for future do-ers. Don't bother going to Repco, or Autobarn to get the equipments or supplies. Go to bunnings as they have all the two things I needed for this install.

The Circular-clamp was in the bunnings clamps ale. And the other is a 25mm plug for the reccirculate pipe, which you can find in the irragation section. Plug and play.

The only thing I cut was the 4mm pipe for the maniford line, because i couldn't get the small clip off. The other two for the 25mm piping you can use a clamp and open it up and re-use them again.

Total cost for equipments = 18 dollar.


Now to the technical side of things.

I notice the MAF sensor is on the downwind side of the Reccirculate inlet pipe. If the sensor is measuring the air from the intake pipe, does that just senses the amount of air in that pipe now, and adjust the fuel accordingly? So, in effect the car shouldn't be running rich as I have read?

[hkogti]

I reckon it too quiet...

Not as loud as on a jap car...

[shhplit]

I reckon it too quiet...

Not as loud as on a jap car...

what is the loudest BOV that anyone has tried on a polo?

recirculating forge one is too quiet...

[AGO41T]

what is the loudest BOV that anyone has tried on a polo?

recirculating forge one is too quiet...

the HKS ssqv is the loudest bov on d market.. i'v had almost all.. and the hks was LOUD, could hear me from a mile away

[Giallorosso]

I installed the HKS SSQV tonight (thanks Adam).

Sounds good, but I took it around the block just now and I am getting bad lag after gear changes. I am assuming I haven't tightened one of the pipes enough?? Can't look now as its dark but I'll check it out tomorrow.

I used a small cable tie to tighten the 4mm pipe for the maniford line, maybe I need something tighter? (the stock clip was really tight). I just used the stock clamps to seal the other two so it shouldn't be those...

[DeanB]

I installed the HKS SSQV tonight (thanks Adam).

Sounds good, but I took it around the block just now and I am getting bad lag after gear changes. I am assuming I haven't tightened one of the pipes enough?? Can't look now as its dark but I'll check it out tomorrow.

I used a small cable tie to tighten the 4mm pipe for the maniford line, maybe I need something tighter? (the stock clip was really tight). I just used the stock clamps to seal the other two so it shouldn't be those...

Are they single use clamps on the DV/BoV ? I know the ones on the TIP, etc are, not sure how well they work when they are used a second time.

[shhplit]

just wondering, will blocking off the recirculating pipe with a 25mm plug throw the car into limp mode?

has anyone changed their forge splitter/BOV to 100% atmosphere on the polo?

[hkogti]

Mine have no problem at all, i blocked mine, no leaks no lag...

Make sure you got the real HKS....

There are a lot of replica out on the market...

[Giallorosso]

Are they single use clamps on the DV/BoV ? I know the ones on the TIP, etc are, not sure how well they work when they are used a second time.

Well I opened them with a multi-grip clamp, then when closed them again. They seem like they work fine, they look re-usable. I'll have a look tonight and check if I can tighten them, maybe one of them is loose?

I can't think of any other reason why I'd be getting lag after gear changes otherwise? It's an original HKS, so not a copy.

[mikepologti]

just wondering, will blocking off the recirculating pipe with a 25mm plug throw the car into limp mode?

has anyone changed their forge splitter/BOV to 100% atmosphere on the polo?

the results for that lil experiment seem to be 50/50 many claim that it sends it into limp mode , thought there are a handfull that claim that theyve been running it , like that for a while. personally i dont see the point in full atmo anyway , the induction noises from our cars arnt that loud and dont warrant the chance of being stranded somewhere (unless of course your going to carry spanners around to readjust it ) just mo.