jgoot

1) anyone has run into any problems.
2) you feel any gains (chipped or not)
3) you would recommend it to anyone else.

Thinking about trying some (on a car w/o oxygen sensors or cats) but if it works well, I might dump some in my Audi. Feedback please....

Thanks!

FoKai

nice tail lights - are those hellas? have the same on mine. bhvdr has skills with toulene...

KenK in TX

Unless your car is specifically programmed to take advantage of higher octane, its a waste of money.

bhvrdr

The timing and boost is retarded on a regular basis due to heat soak, increased intake temperatures, and protection against pinging. Running Toluene or Xylene provides the extra octane to guard agains pinging an results in higher horsepower numbers. I use it on race weekends and have found it to provide a bit more consistent performance. Cheers! Mike<ul><li><a href="https://forums.audiworld.com/performance/msgs/64381.phtml">https://forums.audiworld.com/performance/msgs/64381.phtml</a</li></ul>

bhvrdr

race gas due to the inherent pureness of both Toluene and Kylene. If you are planning on using it often, I might try adding the lubricator from the article in my post below. I would say that I have felt better performance with it and less performance loss. I use it for race weekends about once a month. Cheers! Mike

Audi Junkie

In part, it's HOW it burns, not just octane rating.

KenK in TX

I was answering the question in more general terms since he was asking about an unspecified car, and possibly his A4.

You bring up an excellent point though for the 1.8T - under racing conditions is easy to believe that additional octane would be beneficial due to the extreme temberatures involved.

I find it a little hard to believe that Audi would design an engine that retards timing and boost on a "constant" basis, meaning under normal conditions. I'm not a 1.8T owner, so I cant prove that one way or the other.

Under normal (non race) conditions though, race gas will preform just like premium because the stock ECU isnt programmed to take advantage of the extra octane.

jgoot

thanks

bhvrdr

even under normal driving conditions in hot weather. That is the case and it has been documented as such since the 1.8T A4 came into existence. Cheers! Mike

KenK in TX

I'm not disputing your comments about heat soak on the 1.8T.

What I'm saying is that (HEAT SOAK ISSUES ASIDE) cars that are not programmed to take advantage of extra octane, will not run any differently on race fuel. Period.

Try reading this, maybe you'll understand the facts I'm trying to point out.<ul><li><a href="http://www.caranddriver.com/article.asp?section_id=4&amp;article_id=3604&amp;p age_number=1">Regular or Premium?</a></li></ul>