JE piston sets for the VW/Audi 1.8T 20V engine are offered in 8.5:1 or 9.25:1 compression ratios. Lower compression pistons (8.5:1) will allow higher boost levels on lower octane ratings with less chance of knock and cylinder detonation than higher compression ratio pistons. Lower compression will sacrifice out of boost power, spool time, and
Down to brass tacks. While a manual-transmission GTI S can be had for $29,690 (including $995 for destination), the price can quickly reach quasi-wonky heights, with my 6MT Autobahn rolling out of
See our video which covers all the principles of tuning the 1.8T engine. The 1.8T was replaced with a 1.8/2.0 TFSi version and we have a guide that covers these and the more recent EA888 version is covered here. The 20 valves are arranged with 3 intake valves and 2 exhaust valves per cylinder. The exhaust valves are larger than the intake, and
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