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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Xede-equipped 335i vs. Porsche Boxter



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      02-15-2007, 01:10 AM   #45
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Quote:
Originally Posted by Walked U View Post
The c6 has a ls2 the c5 has a ls1 motor.

yea i know i corrected myself in the post right above yours

thats why im saying now the 335 would kill a c5 and hang right with a c6 which is why i was asking why he though the 335 couldnt hang with a stock corvette
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      02-15-2007, 01:33 AM   #46
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Originally Posted by teknochild View Post
yea i know i corrected myself in the post right above yours

thats why im saying now the 335 would kill a c5 and hang right with a c6 which is why i was asking why he though the 335 couldnt hang with a stock corvette
Ahhh ok, no worries man.

If i get some footage of me and my buddies ill post them up. Im still sure tho a c6 would most likey creep up by a car at freeway rolls.
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      02-15-2007, 01:34 AM   #47
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Originally Posted by catm3 View Post
A base C5 doesn't even put down close to 350Hp at the wheels. Heck that was the crank rating. A C6 would get close to 350rwhp, not a C5. I think you are confusing the C5 and C6.

Yup, ls2 engines have about 350-355 rwhp and torque. stock

Reason being they are so fast is because of the curb weight.
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      02-15-2007, 01:46 AM   #48
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Quote:
Originally Posted by Walked U View Post
Ahhh ok, no worries man.

If i get some footage of me and my buddies ill post them up. Im still sure tho a c6 would most likey creep up by a car at freeway rolls.
ive heard vet owners say things like "on the highway the aerodynamics really helps" but vettes have only .1 or so less drag than most cars so it shouldnt be that huge of a diffrence... (i know thats not why u were saying it would creep though)

and yea the 335 cant use all that low end torque on rolls so same hp + 400lb heavier going to make it slower for sure
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      02-15-2007, 02:08 AM   #49
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Originally Posted by teknochild View Post
ive heard vet owners say things like "on the highway the aerodynamics really helps" but vettes have only .1 or so less drag than most cars so it shouldnt be that huge of a diffrence... (i know thats not why u were saying it would creep though)

and yea the 335 cant use all that low end torque on rolls so same hp + 400lb heavier going to make it slower for sure
Ya for sure, torque doesnt play a big part when already moving past 4th gear anyways.

Weight isnt suppose to play a huge factor either. But when your talking about 1 to 1.5 CL distance anything will help hahaha. (weight drag ect)

Plus im over trying to loose weight in my car. I got a sedan for a reason. I just might as well make more power.
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      02-15-2007, 02:11 AM   #50
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i thought the coupe was lighter than the sedan

wonder how much the rear seats weigh
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      02-15-2007, 02:11 AM   #51
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Quote:
Originally Posted by teknochild View Post
i thought the coupe was lighter than the sedan

wonder how much the rear seats weigh
only by 22 lbs, Im not too sure about the rear seats. Its probably 22 lbs hahaha
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      02-15-2007, 02:23 AM   #52
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Quote:
Originally Posted by Walked U View Post
only by 22 lbs, Im not too sure about the rear seats. Its probably 22 lbs hahaha
they both have rear seats tard

im saying if your looking to drop weight that might be a possibility
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      02-15-2007, 02:26 AM   #53
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Originally Posted by teknochild View Post
they both have rear seats tard

im saying if your looking to drop weight that might be a possibility
Hahaha thats true. im not too sure. It might be so miniscule you probably wouldnt know the difference.
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      02-15-2007, 02:34 AM   #54
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Does the 335i have a rear mounted battery? The battery in the M3 is a heavy beast. Switching to a lightweight battery was good for about a savings of 30-35 lbs.
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      02-15-2007, 02:35 AM   #55
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Quote:
Originally Posted by catm3 View Post
Does the 335i have a rear mounted battery? The battery in the M3 is a heavy beast. Switching to a lightweight battery was good for about a savings of 30-35 lbs.
yea it is, theres always replacing windows, and doorframes too lol
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      02-15-2007, 02:35 AM   #56
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Originally Posted by catm3 View Post
Does the 335i have a rear mounted battery? The battery in the M3 is a heavy beast. Switching to a lightweight battery was good for about a savings of 30-35 lbs.
ya it does. Probably taking out the battery to the lightweight 11 lb one with rear seat removal should shave like 50 lb.

thats saying if the back seats weigh 22 lbs and the battery weighs about 25-30 lbs.
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      02-15-2007, 02:46 AM   #57
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Quote:
Originally Posted by Walked U View Post
ya it does. Probably taking out the battery to the lightweight 11 lb one with rear seat removal should shave like 50 lb.

thats saying if the back seats weigh 22 lbs and the battery weighs about 25-30 lbs.
I am curious if anyone will come up with a titanium exhaust. May be good for another 30-50 lb reduction, but $$
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      02-15-2007, 02:54 AM   #58
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I am curious if anyone will come up with a titanium exhaust. May be good for another 30-50 lb reduction, but $$
I know of a guy that wants to do a custom titanium peice on my car ( turbo back ) but he said a hard estimate just for the materials and labor is about 7 grand $$$$.

Maybe if this was my track car.
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      02-15-2007, 03:10 AM   #59
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Quote:
Originally Posted by Walked U View Post
I know of a guy that wants to do a custom titanium peice on my car ( turbo back ) but he said a hard estimate just for the materials and labor is about 7 grand $$$$.

Maybe if this was my track car.
for that much you might aswell swap the turbos
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      02-15-2007, 03:12 AM   #60
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Quote:
Originally Posted by teknochild View Post
for that much you might aswell swap the turbos
Ya, thats why i said im over trying to loose weight in the car. Its better to just make more power.
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      02-15-2007, 12:02 PM   #61
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When I said base 2005 C5 I meant C6, 2005 was the first year for the C6.


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      02-15-2007, 01:51 PM   #62
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When I said base 2005 C5 I meant C6, 2005 was the first year for the C6.


T
still doesnt answer the question
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      02-15-2007, 02:02 PM   #63
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<<yea i know i corrected myself in the post right above yours

thats why im saying now the 335 would kill a c5 and hang right with a c6 which is why i was asking why he though the 335 couldnt hang with a stock corvette>>

Well, a mostly stock M6 C5 (say with an air intake and maf only) will run a 13.3ish with a 1.90 60'. If it's an auto then closer to a 13.5, but if its an auto with a stall then around a 12.6. I've had a ton of C5s so I'm pretty familar with them.

A PROcede 335 should hang with/be slightly faster than a mostly stock C5 (unless the C5 has a torque converter).

If the C5 has $1200 in extras (a cam and headers), then its going to run in the mid 12 range on street tires and blow away the 335.

Now with the C6, they run around a 12.7 stock (a lot go faster but lets just look at the average). So, a PROcede 335 is going to be .3-.4ths slower with all else being equal. Maybe from a 30-100mph roll it can keep pace, but from a drag point of view .3ths is 3 cars behind, quite a distance.
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      02-15-2007, 02:26 PM   #64
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Quote:
Originally Posted by Walked U View Post
Yup, ls2 engines have about 350-355 rwhp and torque. stock

Reason being they are so fast is because of the curb weight.
Not all C6's have that much to the ground, depends on the dyno. I ran one recently with my Stage 3 B5S4 and pulled on it well into 3rd. The ones I have seen around here are in the 330 - 340 WHP range. But still, at around 3200 lbs, and a flat torque curve, they run well.

Red - My Tweaked AWE RSK04 B5S4
Green - Stock RS6
Blue - 6MT C6 Corvette with exhaust

BTW, the S4 is up for sale in order to pick up a 335i, in case someone knows someone who is looking for one.

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      02-15-2007, 02:32 PM   #65
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that c6 on the above would probaby lose to shivs car
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      02-15-2007, 02:36 PM   #66
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Quote:
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that c6 on the above would probaby lose to shivs car
I dunno but pointless to speculate. The shop conditions were nearly intolerable. Two small fans with limited airflow capability. Add on top of that a 100,000 BTU heater about 15 feet and pointed at the front of the cars. My starting IAT temps were in the 110 F range. That C6 sat at idle on the rollers for a good while.
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