This is from another forum, going from a 2.5" exhaust to a 3" exhaust. There was a little more boost added and the downpipe type was changed from a 2.5 split straight tube downpipe (this is for a gasser) to a 3" split bellmouth downpipe.
Quite an improvement! We cannot see how much was due to the exhaust diameter alone and not to the amount of gain is definitely more than just due to higher boost.
I saw that too. I think that they said it was also tuned. So for 70-100 ft lbs and hp gained, lets say, 50-70% of that was due to tuning and the ability to raise boost due to better exhaust. So about 30-50 hp and torque was due to the exhaust. This is all a guess, of course, since there is no apples-apples comparison.
for a 300zx twin turbo...upgraded fuel system, and upgraded turbos and supporting mods. It's a 3.0L gasser. This person had the car fine tuned and switched from a 2.5to a 3" exhuast so it's not an apples-apples comparo.
Yeah, just looking at it you can tell it's not a diesel. The powerband and the rpm range....I don't think there are any passenger car diesels that spin to 6600rpm His point was the exhaust upgrade.
I totally agree with you about the larger exhaust almost always being better on turbo cars, but again, this example is somewhat lessened due to the lack of an apples-apples.
I found some info on another VW navigation board on how to do this but it's been deleted by the mods. So here is a summary and clearly explained article on how to unlock the RNS510 VIM video in motion (TV free) dvd player capability. This previously cost about $150 US for the plug-in box and...
so a customer orders parts to be shipped to my door (i cannot afford the parts as too costly) ... well po box as i currently work days and do not trust people.. so can go get my box at my po box after work... its really cool.. they put a key into my little dinky box that gives me access to this...
I am gonna rebuild my Y2K ALH engine and have not yet found a recipient car for the motor. Soooo what all can take these motors easily without too much trouble??
I have a 2000 volkswagen jetta with immobilizer problems and will not start and will leave me stranded. Is there any way to disable this without having to cut wires? Any input appreciated.
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His point was the exhaust upgrade.
