Audi A4 is my first german car. I drove Japanese car before. I owned a 99.5 A4 1.8T with Quattro. I've read the archived forum about chipping on tip. However, there're something really confused me.<p>1) In the archived messages, ppl said that only Garrett did the ECU chip for tip, but I've seen someone using Wett chip. Can anyone explain this to me? Does it mean a tip can use any chip from any company right??<p>2) I'm interest for a MTM chip, but don't know if it's good for tip or not. Same as above, does the MTM chip is not suitable for a 99.5 A4 tip??<p>3) Does anyone chip their 99.5 A4 tip yet?? It seems that only pre-99.5 ppl chipped it, but not 99.5 ppl.<p>4) How about the Garrett tip chip?? Is it compatible for 99.5 also??? Can I use it in my 99.5 1.8TQ tip??<p>5) For the wett chip or other socket chip, is it hard to remove the parts and see your ECU box and remove your chip???<p>John

1. I believe that Garrett is still the only one with a TIP chip. This is a transmission chip, and changes the shift points (I think) and reduces the delay when shifting manually (with the tip). Does not increase engine performance, Garrett has another chip for that.<p>2. You can use any engine chip for your car, I'm leaning strongly towards MTM myself. Don P has done a survey of chip owners, check out his site, there's a link on the links page.<p>3. ?<p>4. Check with Garrett, should be.<p>5. No, very easy (I've sen it done), whole process takes about 5-10 minutes.<p>Regards,<br>Rodney<p>'99 A4 1.8tqms