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  #1 (permalink)  
Old 11-13-2007, 01:10 AM
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Power upgrades

A while back there was some info re the F-L Cayman upgade and a mag report that was disappointing... supposedly due to electronic gremlins. At the De I attended this weekend, one guy had a 2000 BoxsterS in which he had blown the engine. A shop in Atlanta dropped in a 3.8 X51, added GT3 front brakes and front end (fascia, fenders, center cooler). Of course the suspension was upgraded somewhat. The guy told me had $45k in the car, not counting the original purchase. The car ran like "stink" pulling a of GT3 on the straight, but still wasn't as fast as some others. The guy reported that he had the same? electronic problem as F-L in that he had to replace his OEM computer. And that even with that done, his air intakes (remember 2000 Boxster) were insufficient to produce all the power that should have been available. No arguments here against improving performance, just info.
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  #2 (permalink)  
Old 11-13-2007, 01:55 AM
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Originally Posted by Seamus View Post
A while back there was some info re the F-L Cayman upgade and a mag report that was disappointing... supposedly due to electronic gremlins. At the De I attended this weekend, one guy had a 2000 BoxsterS in which he had blown the engine. A shop in Atlanta dropped in a 3.8 X51, added GT3 front brakes and front end (fascia, fenders, center cooler). Of course the suspension was upgraded somewhat. The guy told me had $45k in the car, not counting the original purchase. The car ran like "stink" pulling a of GT3 on the straight, but still wasn't as fast as some others. The guy reported that he had the same? electronic problem as F-L in that he had to replace his OEM computer. And that even with that done, his air intakes (remember 2000 Boxster) were insufficient to produce all the power that should have been available. No arguments here against improving performance, just info.

So whats the problem? I can put an X51 in Boxster or Cayman for 25k all parts and labor. Herman on this site can tell anyone as to how a proper conversion should be. I even let you keep your old engine if you want it.
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Old 11-13-2007, 04:36 AM
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Originally Posted by PCA-TECH View Post
So whats the problem? I can put an X51 in Boxster or Cayman for 25k all parts and labor. Herman on this site can tell anyone as to how a proper conversion should be. I even let you keep your old engine if you want it.
No problem, but it appears that it you want to maximize the potential of the conversion,you need to pay close attention to the computer (reprogram, etc.) and perhaps finding some Turbo rear fenders/intakes to provide the air the bigger engine needs??????
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Old 11-13-2007, 08:17 PM
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So whats the problem? I can put an X51 in Boxster or Cayman for 25k all parts and labor. Herman on this site can tell anyone as to how a proper conversion should be. I even let you keep your old engine if you want it.
What's a 3.4L Cayman S motor worth?
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Old 11-13-2007, 08:39 PM
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I've been informally offered $4.5k to $5k for my 3.4 CS engine as part of a proposed 3.8 swap...

Last edited by Fort Felker; 11-13-2007 at 10:30 PM.
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Old 11-13-2007, 10:04 PM
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Originally Posted by Seamus View Post
No problem, but it appears that it you want to maximize the potential of the conversion,you need to pay close attention to the computer (reprogram, etc.) and perhaps finding some Turbo rear fenders/intakes to provide the air the bigger engine needs??????
The air intake on the side of the Cayman or Boxster is just fine and the programming is no problem. You just have to know what and how to do it and most simply do not know.
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Old 11-13-2007, 10:26 PM
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So whats the problem? I can put an X51 in Boxster or Cayman for 25k all parts and labor. Herman on this site can tell anyone as to how a proper conversion should be. I even let you keep your old engine if you want it.
Really......? Is that $25K if we keep our old engine?
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Old 11-13-2007, 10:38 PM
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Originally Posted by Seamus View Post
A while back there was some info re the F-L Cayman upgade and a mag report that was disappointing... supposedly due to electronic gremlins. At the De I attended this weekend, one guy had a 2000 BoxsterS in which he had blown the engine. A shop in Atlanta dropped in a 3.8 X51, added GT3 front brakes and front end (fascia, fenders, center cooler). Of course the suspension was upgraded somewhat. The guy told me had $45k in the car, not counting the original purchase. The car ran like "stink" pulling a of GT3 on the straight, but still wasn't as fast as some others. The guy reported that he had the same? electronic problem as F-L in that he had to replace his OEM computer. And that even with that done, his air intakes (remember 2000 Boxster) were insufficient to produce all the power that should have been available. No arguments here against improving performance, just info.
Seamus,

If you read more about the problems that F-L ran into, you will find that they were bumping into a horsepower plateau. For some reason, the engine wouldn't go past something like 350 hp. After doing all they knew, they determined it might be electronic. So they sought the advice of the world's leading expert in Porsche electronics. Some slouch named Scott Slauson. He's the Porsche Club of America's technical adviser in regard to Boxster, Caymans and Carrera GT's. Maybe you've heard of him or read his publications in the Panorama, Road & Track, Car & Driver, Excellence, and so on. They figured if anyone could tell them what was going wrong, he could.

Well, as it turned out, this dude knew exactly why the engine wouldn't put out. I think it was pretty complicated, but it was a whole slew of problems including the basic engine programs and the PSM not allowing the X-51 to do it's thing because it wasn't ready for those forces and it interpreted them as the car being out of control. Anyway, this Scott guy solved their problem and got the X-51 spitting out a little more than it was even rated for, somewhere around 405hp.

My guess is that this guy with the Boxster had the conversion done and the techs ran into the same brick wall and fed the guy a line of **** about the intake being too small.

By the way, Scott Slauson is a member here. Don't tell him I told you, but he goes under the name 'PCA-Tech'.
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Old 11-13-2007, 10:49 PM
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Intakes too small made me laugh

I agree with above poster insomuch as the intake story is likely not true, and it is some other cause.
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Old 11-14-2007, 01:02 AM
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