I am not issuing a statement here to be a criticism of any tuner, but to alert people who are thinking of modifying their 1.8T A4's<br>For most who will only hit the gas in a occasional squirt on the street the kits are fine.<br>For those who do more spirited driving and take their car to track days or anyone wanting power 250HP for more thank 30 sec read on.<br>I have a 250HP Kit and I can tell you I believe more mods are needed thank any tuner is currently offering.<br>Heat is a problem in the A4, I challange any one that can produce a constant 250HP for more than 2 minutes!<br>Insufficiant Intercooler air flow to keep it cool, Air Box ducts heats up as insufficient<br>sheilding and close positioning to "HOT" turbo and poor air flow across turbo.<br>If these where not the case 250HP would be ample for most people.<br>I bet many people who have gone to 300HP kits are only getting 230-250HP reliably anyway becaust of the above mentioned proplems.<br>Even with a short 30sec flooring of the car, the engine bay gets Hot, try it your self, pullover and wait for 10 sec and put your hand on the bonnet, get a couple of eggs ready to fry!<br>No wonder there is no hood insulation on the 1.8T A4, If you have it, I would remove it, it only helps to hold the heat in the engine bay. I would also imagine a stock 1.8T would produce similar heat if pushed for a minute or so.<br>The less heat you have in your engine bay the longer every thing will last.<p>This is my 0.02c worth.

I have the Neuspeed chip, and after 5 minutes of spirited driving, I floored the accelerator in 5th gear. The car topped out at 110 MPH (estimate as I was looking at the tach 4500RPM - I believe.) Would not go faster! Things just got too hot!<p>I am sure people sooner or later will offer a way to get more air into the engine. Also, what about getting air out?

Wett 235 kit with extrude manifold + exhaust gives about 250.<br>I should have said K-04 and above Kits.<br>I think you will find most tuners are achiving similar results.