EJ20H-TT Posted April 8, 2004 Share Posted April 8, 2004 Now this is a question that should have no bearing on a stock car. But for a long time now Subaru Automatics have been detuned versus the manual equivalent. For example - the JDM B4 RSK - manual rated at 276hp (206kw) the automatic detuned to 255hp (190kw). This has continued for the new GT - manual rated at 276hp (206kw) the automatic detuned to 255hp (190kw). I note that in earlier history when the legacy turbo engine was only producing 245hp (183kw) - that both manual and auto had the same power rating. Do i conclude from this that the auto has had problems coping with the extra power ? And that for reiliablity reasons the auto has been detuned ? If so then u would think anyone looking to modify an auto to produce more power may have probs with the auto. Alot of people like to put a more freeflowing aftermarket exhaust on their cars - which generally improves performance. Could this be an issue for Auto owners. Thoughts ? Link to comment Share on other sites More sharing options...
Derbagger Posted April 8, 2004 Share Posted April 8, 2004 I'm not sure if this is the reason, but some car companies made the auto version a little less power and more torque, to make up for torque losses in the tranny (the taurus SHO actually had a larger engine in the auto to make up the difference). Some cars it is due to power limits of the tranny. And then there are those who put more power in the stick for marketing. Link to comment Share on other sites More sharing options...
EJ20H-TT Posted April 8, 2004 Author Share Posted April 8, 2004 [img]http://homepages.ihug.co.nz/~1amiga/zu1.jpg[/img] Well one can see here - Subaru have reduced the auto's torque - thus of course power has declined as well. Marketing: Hard to see advantage in having a lower power car. In this age of horsepower wars. Especially as Auto sales are greater than manual sales. Could it be the reason the US has "only" got 250hp - so both manual and auto have the same specs - thus good for marketing ? Or does/will the manual have more grunt than advertised ? Link to comment Share on other sites More sharing options...
SteVTEC Posted April 8, 2004 Share Posted April 8, 2004 Those manufacturer crank power/torque charts are a nice point of reference but don't necessarily mean anything. They match up with what marketing "claims", but what marketing wants to claim and what engineering actually gives you can be two different things. The only way to find out for sure is to throw them on a dyno. Link to comment Share on other sites More sharing options...
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