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Old 03-21-2006 | 01:52 AM
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I looked at X51 but could not wait for factory installed version as I got too impatient. This week I'm installing ECU upgrade, intake box/cone filter, headers, sport cats and keeping the sport exhaust muffler that is connected to sport exhaust switch. I'll let you know how it sounds, and power increase should be approx 25-40 HP.
Old 03-21-2006 | 01:57 AM
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Originally Posted by icon
where you slowly up the rpm with the mileage

so you are satisfied with the x51 and the additional expense was worth it?

so you have 1200 miles and you havent gone over 5400 rpm???
Yeah, the owners manual says something like 4250 rpm for the first 2400 mi

AS IF....

Is this a joke?

Legally obliged jargon?
Old 03-21-2006 | 04:35 AM
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Love the X-51. The added torque, the throaty growl with the sport exhaust on. After owning a car with it I can't imagine going back. My last car was a 03 C4S. You can really feel the difference in pulling power with the 306 ft lbs of torque all the way through the power band. You'll love it.

JFS
Old 03-21-2006 | 07:51 AM
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Originally Posted by Azurro_California_911
Love the X-51. The added torque, the throaty growl with the sport exhaust on. After owning a car with it I can't imagine going back. My last car was a 03 C4S. You can really feel the difference in pulling power with the 306 ft lbs of torque all the way through the power band. You'll love it.

JFS
Oh man you guys are killing me! I just could not justify a $17K power upgrade of only 26hp. Oh well, I'll live with my C2S with all the other toys You bunch of lucky bastards!

Regards,
Deanski
Old 03-21-2006 | 09:49 AM
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Originally Posted by RacerXTP
I looked at X51 but could not wait for factory installed version as I got too impatient. This week I'm installing ECU upgrade, intake box/cone filter, headers, sport cats and keeping the sport exhaust muffler that is connected to sport exhaust switch. I'll let you know how it sounds, and power increase should be approx 25-40 HP.

cant wait to hear about it - details please!
Old 03-24-2006 | 12:27 AM
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I love mine too (Club Coupe 2 of 50)--I have about 130 miles left in the 2000 mile break in period. I've inched up on 5500 RPM's a few times, and haven't red lined yet. But X51 definitely pulls harder than the base 3.8. In fact, it launches faster than my 01 996 Turbo did--due to the turbo lag from idle to about 2100 RPM's. The X51 sounds glorious under acceleration and is, overall, more lively than the base 3.8 too.

Excellence did a very balanced write up in their February 2006 edition, but the online reprints of the article have disappeared. They said head to head the X51 pulls away gradually but the entire package was so "sweet" that it really is what the 3.8 should be.

Only "bad" thing about X51 is the price--and I got the Club Coupe pricing which was a nice built in discount, so I'm not complaining.
Old 03-24-2006 | 01:48 AM
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Quote: Excellence, Feb 06: in informal roll-on tests in 3rd and 4th gears... the x51 pulls away from the 997S slowly, but surely.
Old 03-24-2006 | 02:40 AM
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2nd quote:Ibid: alot of money to get....an engine thats significantly sweeter but only marginally more powerful
Old 03-24-2006 | 02:56 AM
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Default Exhaust and ECU Upgrade

OK I just took delivery of 997 S cab with following upgrades: Fabspeed headers and sport cats, Evoms intake box/filter, ECU flash upgrade. Cost about $5k. Sound is AWESOME, more torquey feel, noticeble power increase (dyno estimate is 25-40 HP depending on throttle), and I kept the OEM sport exhaust mufflers with bypass that allows me to switch sound on/off with the sport switch. Local Porsche specialty shop in LA installed in 8 hrs. Avoided hassle and cost of $20-25k rebuild from dealer. My 997 S is now a "MONSTER"!!!!
Old 03-24-2006 | 03:52 AM
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hey jeff, for future reference, the search button isn't just there for aesthetics
Old 03-24-2006 | 10:06 AM
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Originally Posted by RacerXTP
OK I just took delivery of 997 S cab with following upgrades: Fabspeed headers and sport cats, Evoms intake box/filter, ECU flash upgrade. Cost about $5k. Sound is AWESOME, more torquey feel, noticeble power increase (dyno estimate is 25-40 HP depending on throttle), and I kept the OEM sport exhaust mufflers with bypass that allows me to switch sound on/off with the sport switch. Local Porsche specialty shop in LA installed in 8 hrs. Avoided hassle and cost of $20-25k rebuild from dealer. My 997 S is now a "MONSTER"!!!!
25-40 hp and you only spent 5k?
but no dyno?
Old 03-24-2006 | 11:40 PM
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Yep. I'm going to dyno asap, its across town 1 hr didn't have time yet. Very reputable parts and install group did job, so far its great.
Old 03-25-2006 | 12:20 AM
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Originally Posted by RacerXTP
Yep. I'm going to dyno asap, its across town 1 hr didn't have time yet. Very reputable parts and install group did job, so far its great.
cool! be sure and post dyno results!
Old 03-25-2006 | 01:12 AM
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One great truth here: You must dyno engine stock first.
Old 03-25-2006 | 01:36 AM
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Originally Posted by gpjli2
One great truth here: You must dyno engine stock first.
Good enough and always ideal but if he scores more than 335 @ rear wheels he's strong in my book.



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