Jim Bowen 1 Posted December 11, 2014 Am sure i've seen this stated a few times? Is it true it gives a few more bhp? Worth doing? Quote Share this post Link to post Share on other sites
Jim 2 Posted December 11, 2014 From a quick google it looks like it's the other way round - putting the VR6 MAF on a 1.8T! But would be interested to hear if you turn anything up. Quote Share this post Link to post Share on other sites
Jim Bowen 1 Posted December 11, 2014 Think i read it on here: http://forums.vwvortex.com/showthread.php?4761622-How-to-build-a-relatively-inexpensive-reliable-powerful-Vr6 Quote Share this post Link to post Share on other sites
Mk3highline 10 Posted December 12, 2014 I don't think its the MAF but the inlet air temp sensor The stock posision in the inlet has a lot of heat soak On a cold day near 3degrees outside I was getting around 28-32 degrees IAT on a motorway run and lot higher for town driving up to near 50degrees!! I have moved the sensor to inside the air filter and it dropped the IAT significantly which in turn give bit more timing advance At the moment my filter is above gearbox and IAT is normally 3-5 degrees night than outside temp Quote Share this post Link to post Share on other sites
Kevin Bacon 5 Posted December 12, 2014 The VR6's temp sensor takes about 15 seconds to update as well! Quote Share this post Link to post Share on other sites
sexybourbon 0 Posted December 12, 2014 The VR6's temp sensor takes about 15 seconds to update as well! Kev can you explain this in any more detail iv been looking at this but heard mixed reviews Quote Share this post Link to post Share on other sites
Mk3highline 10 Posted December 12, 2014 Pardon me for probably using the wrong terminology but the vr6 IAT takes longer to see a change in temperature Where's the one off the 1.8t reacts/sees the change in temperature lot quicker Quote Share this post Link to post Share on other sites
science 0 Posted December 12, 2014 Pardon me for probably using the wrong terminology but the vr6 IAT takes longer to see a change in temperature Where's the one off the 1.8t reacts/sees the change in temperature lot quicker That's right, the VR6 element is prone to heat soak. The 1.8T had an open element and measures the temp of the air rather than the inlet manifold it's also quicker to react. I've a 1.8T sensor drilled into the maf, OBD2 has a blanked port that's perfect for it. Quote Share this post Link to post Share on other sites
daves16v 1 Posted December 27, 2014 I decided to look into doing this so bought a used item for a few quid off ebay. I had a spare VR sensor so did a comparison between the 2. Firstly I got the engine up to temp to the point where the fans were kicking in. I plugged each connector into the loom and let it hang down in front of the fan. I plugged VCDS in and monitored the sensor temps each time the fans kicked in. The VR sensor updated on VCDS about every 2 seconds, the newer type sensor updated about every 0.5 second so not a huge difference. I've not installed the new type yet. Quote Share this post Link to post Share on other sites
Wompa 0 Posted January 5, 2015 Iwe done this and couldnt feel a thing... So back went the original part... Quote Share this post Link to post Share on other sites
Kevin Bacon 5 Posted January 5, 2015 The effects of intake air temp on a n'asp engine's performance is pretty negligible compared to a turbo engine, hence why VW had to use a faster one for the 1.8T and TFSI engines. Quote Share this post Link to post Share on other sites
Mk3highline 10 Posted January 7, 2015 Also depends if you have a good cold air feed It's ok getting a new sensor and sticking it near the filter only to see hot engine bay temps stock 12v round town my IAT were in the region of +50degrees c motorway would drop to around 32 in winter Quote Share this post Link to post Share on other sites
