I drove the m5 out to phoenix for the weekend and we (full car, driver + 3 passengers) were cruising on a long pretty staight freeway late at night. a 05+ carerra lines up with me and we do a few runs from ~60 mph up to 130

every run i would leave his headlights atleast to my back door

after the 3rd run, he comes along side and says, "let turn my turbo on real quick and im going to smoke you this time" :shifty
we down shift, take off MISHIFT! LOL and we just keep on cruising away laughing

he must have the on/off turbo switch mod

turn on my turbo...tool bag

turn on the turbo???? yea ok. good kill.

i lawled

ahaha way to fight the P-car stereotype, guy...."turn on my turbo" :rofl

Anyway, by "new Carerra," do you mean 996, or brand-new 997? A 996 shouldn't be a huge amount of trouble, but a 997, well... :shifty

EDIT: d'oh, I just saw the '05+ part
EDIT2: Apparently base 997 Carreras aren't as quick as I thought; the Carrera S is the one I was thinking about.

i guess he needed to turn on his turbo to try and beat your "I win" button.

mis-shift? naw..... I mean shit he "turned on his turbo"

must have blown his "FLUX COMPACITOR!!!!!!!!!!!!!!!!!"

LOL it was halarious, and i forgot to mention that on the first race. His passenger gave us a cocky "see ya!" wave...then we started pulling on them :lol

I kept looking at the badge trying to figure out what kind of carerra it was but it only said Carerra. Nothing else, I'm not sure what kind of numbers they put down, but if anybody knows, I'm interested

EDIT: it has 325 hp, 0-60 in 4.8 seconds

If he had an 05', then it would be a 997 that has 350hp. (I have a 04' C4S, last of the 996's that was rated @ 325hp). For either year, if it was a turbo, you'd see large open areas in the side of the fenders, in front of the rear wheels. (As for his BS on the turbo switch, no such animal, just on/off for Sport Exhaust which I happen to have........) Unless he was packin a Turbo, I dont think from a roll either will take the M5. (I'd not try myself personally).

Actually a 997 Turbo has about 480hp and over 4xx in torque.........thats a hard one to beat........Me thinks he had
a regular 350hp 997' and was a tool......

My 04' C4S is not slow by any means (much more of a top-end/handling car anyway), but you just dont have the torque in these engines w/o the twinturbos...................... If I want brutal power, I use the Pantera.

An E39 M5 should pull very slowly on a 997 Carrera, much like your races. That's the outcome I would've expected. You would've beaten a 996 with ease. The gearing on the 997's is awesome up top, though, almost as good as our car ;)

Nice runs.

LOL yea it was definately not a turbo. I do not know much about those cars but I can tell a turbo from a non turbo. This one was definately 05 or newer, sport exhaust button? Thats pretty cool, I noticed his car was pretty loud for being stock...

LOL yea it was definately not a turbo. I do not know much about those cars but I can tell a turbo from a non turbo. This one was definately 05 or newer, sport exhaust button? Thats pretty cool, I noticed his car was pretty loud for being stock...

Tell me you didn't drop K&N filters in your car?!?!

Take them out IMMEDIATELY and replace with stock ones.

An E39 M5 should pull very slowly on a 997 Carrera, much like your races. That's the outcome I would've expected. You would've beaten a 996 with ease. The gearing on the 997's is awesome up top, though, almost as good as our car ;)

Nice runs.

Even with 4 passengers in the M5??

Tell me you didn't drop K&N filters in your car?!?!

Take them out IMMEDIATELY and replace with stock ones.

Why is that? Educate me.

The filter oil fouls the MAF sensors. Well, that's the commonly accepted line, anyway. YMMV

I don't use them, but then again that has more to do with the intake tract already being very well designed to begin with, and showing no meaningful gains even with a CAI, etc.

you didn't oil them did you?? if so remove immediatley. very bad for MAF sensors.

Even with 4 passengers in the M5??

No, of course not. I meant each car with one person (the driver). I wasn't referring to his particular case, rather, an M5 v 997 Carrera race. Sorry for the confusion, I can see how my original post could've been taken differently.

Why is that? Educate me.

There have been numerous reports of the K&N's killing the MAF's on these motors. People have shown, with pics, the damage done by the K&N's.

you didn't oil them did you?? if so remove immediatley. very bad for MAF sensors.

Even if they are oiled, the K&N's can be harmful in the long run because the oil itself is what can be damaging to the sensor. I personally would never drop K&N's in my car, even if I was religiously oiling them and the oil wasn't getting through to the MAF's. That's just me and I am very anal when it comes to certain items on my car.

Quite frankly, I don't why anyone would change the intake system on these cars. The intake flows very well and doesn't need to be modified. I would go as far as to say the K&N's *could* potentially hurt performance.

Leo....... Yea. There is an option where the car is equiped with a sport exhaust system. The dash button basically turns it off and makes it total quiet/normal. (I notice a minimal change in power between the settings). But not bad when your'e crusin in the mountain areas of N.Ga and dont want to draw attention....

If its "on" the car actually goes quiet......the default sounds to be what you heard, which is much louder when you get to about 3000rpm. (although you can still hear it below that)

(mine is the C4S, wider body, with the vents in the rear similar to turbo, and the sport exhaust has those shaped tips on the 04')

Yeah, oil + maf = not so good.

Strange kill.

Rogo

Yea I've read about the K&N's being bad for the MAF and I do believe it. I have also read of a few people running them for many miles with absolutely no problems. But the only "affordable" intake systems for these M5's are crap and suck in pure hot air. So I took the risk, keeping the stock design which is really good, but with that much more air flow.
The filters with the velocity stacks = sechs, so wish me luck that I am added to the "no problems from K&N" list :)

LEO! where have you been?
come to the meet this wednesday!

If he had an 05', then it would be a 997 that has 350hp. (I have a 04' C4S, last of the 996's that was rated @ 325hp). For either year, if it was a turbo, you'd see large open areas in the side of the fenders, in front of the rear wheels. (As for his BS on the turbo switch, no such animal, just on/off for Sport Exhaust which I happen to have........) Unless he was packin a Turbo, I dont think from a roll either will take the M5. (I'd not try myself personally).

Actually a 997 Turbo has about 480hp and over 4xx in torque.........thats a hard one to beat........Me thinks he had
a regular 350hp 997' and was a tool......

My 04' C4S is not slow by any means (much more of a top-end/handling car anyway), but you just dont have the torque in these engines w/o the twinturbos...................... If I want brutal power, I use the Pantera.



This isn't correct. A carrera is 325hp. A carrera S will have 355hp, 3.8l.


:)

The filters with the velocity stacks = sechs, so wish me luck that I am added to the "no problems from K&N" list :)


Tell me about these velocity stacks, I've been reading up on them quite a bit. Do the change the sound of the motor at all? Any noticeable difference in sound/performance/smoothness on acceleration?

What is their main purpose?



I am looking into the velocity stacks and the IATS Relocation Kit next for the car.

I am looking into the velocity stacks and the IATS Relocation Kit next for the car.
Do the IATS relocation, it's a seriously awesome, yet simple mod---we don't get many of those for these cars. I did it in the middle of winter and still felt a very noticeable difference.

If I'd wanted to feel like I was driving a 540 half the time, I wouldn't have gotten an M5. With the IATS kit, I now have the full M power available to me at an instant's notice 90% of the time I want it.

Do the IATS relocation, it's a seriously awesome, yet simple mod---we don't get many of those for these cars. I did it in the middle of winter and still felt a very noticeable difference.

If I'd wanted to feel like I was driving a 540 half the time, I wouldn't have gotten an M5. With the IATS kit, I now have the full M power available to me at an instant's notice 90% of the time I want it.

Sounds good. Is it a difficult install? Does the kit come with instructions? Do you remember where you purchased yours from? Thanks for your help.

Once you get past the trepidations about cutting wires going directly into the DME :eek: it's in fact a very easy install. It comes with instructions, but here's a quick synopsis:

1.)Remove the bumper(easy, but you need a T50 Torx bit) and drill a hole around the lower radiator grill shroud to place the new sensor in. I had to loosen the screws securing my headlights because they were torqued down so tight the bumper didn't want to come off.

2.)Install the new sensor and route the wiring up around the preexisting looms all the way to the passenger's side cabin air intake, under which is the DME.

3.)Uncover the DME and disconnect several wiring connectors; then, tap a couple wires.

4.)Put everything back together, and you're done.


The biggest issue was getting everything aligned when reinstalling the bumper, since I was doing the job alone.

I bought my kit from Beastpower, but UFMotorsports sells them directly, and I wouldn't be surprised if another couple vendors sell them, too. They're all priced within +-$15 of each other, so just take your pick.

k&n + maf = carb cleaner every 3k miles

i saw a study done with a oem filter, k&n, and a fram, the k&n and the oem did the same on air restriction while the fram did half as good,

i have a k&n and carb clean the maf every 3k, i think it does better but that test i saw does not lie, just dont get a cheap air filter

k&n + maf = carb cleaner every 3k miles

i saw a study done with a oem filter, k&n, and a fram, the k&n and the oem did the same on air restriction while the fram did half as good,

i have a k&n and carb clean the maf every 3k, i think it does better but that test i saw does not lie, just dont get a cheap air filter

The k&n filter made the car feel a bit better, then the velocity stacks just made a perfect combination :alright
I will have to start cleaning my maf's every so many miles, just to be safe

Tell me about these velocity stacks, I've been reading up on them quite a bit. Do the change the sound of the motor at all? Any noticeable difference in sound/performance/smoothness on acceleration?

What is their main purpose?



I am looking into the velocity stacks and the IATS Relocation Kit next for the car.

The velocity stacks are amazing. They changed the sound of the motor a tiny bit, a bit deeper. But nothing drastic. Performance wise, it will take your computer about 600 miles to adjust with more air flow and from there on, your car will feel like it hauls :redspot I love it!

LEO! where have you been?
come to the meet this wednesday!


Finals :(
I might head out there in a few weeks, got some minor tuning/maintnence to do on the beast before i go run her.

Finals :(
I might head out there in a few weeks, got some minor tuning/maintnence to do on the beast before i go run her.
alrite but we will b waiting for ya haha

Don't over oil a K&N and you shouldn't have any issues! Put just enough oil on it to turn the gauze pink and let it dry for 24 hours. If you feel it you need it use MAF sensor cleaner not carb cleaner. Carb cleaner can damage the MAF.

I dont know guys. I am still not convinced that the IATS is where its at. Has anyone decisively concluded that the air at the front of the car is the same temp as that which enters the throttle bodies? Greg over at M5 board did some studies back in the day and was under the impression that the air may become heated as it goes up the intake tract and that fooling the computer into thinking the intake air is colder than it really is may be risky. Any thoughts?

There's a lot of competing information regarding the whole IATS issue. Greg does us a service by raising the issue, but I believe there is other "research" that contradicts his, and vice versa.

My gut instinct is that from the time the air first enters the intake system to when it passes through the throttlebodies is mere fractions of a second when stopped at idle, much less when under load and underway, and the air doesn't have time to be heated to any meaningful degree. I was wary of doing the mod at first, too, but after seeing the results I'm fully behind it. Considering our cars' stock tune has them running absolutely pig rich, IMO, even if it is "fooling" the DME to some degree, it can't hurt too much given how strong the computer's self-preservation instinct apparently is :D

Good synopsis, thanks! That logic right there might drive me over the edge of indecision.

Hey 2XM3, Wow on the Porsche u got there.