Autosport7

I am looking to place some Go Fast parts in my C63.
I know there are some of you out there who "part specific dyno". I am curious what gains you guys received from your mods.
Please post the:
- Manufacturer
- Part
- Part # if you have it
- Dyno proven results
- In-seat experience if any were noticed

average joe

http://cimg9.ibsrv.net/gimg/www.mbwo...5df304b39e.jpg

Weistec Stage 1 Supercharger took it to 634bhp

Inseat experiance mmmmm Feels like someone is pushing you in the chest through the seat ha ha.

average joe

Autosport7

Good info, I am looking more for bolt ons at this time, but thanks.

Kriston

Whats up brother,

Just stick with Headers and a retune. You wont get much out of the secondary cat delete. In terms of bolt ons, the only other mod worth it is the pulley. But not for 1100 bucks!

Autosport7

This is what I'm finding. Thanks Kris

johnnyblaze

Modding the C63 is easy.

Things that make a huge difference (40-90whp)
-Supercharger
-Nitrous
-Headers
-Tune

Things that help make a difference (5-15whp)
-Drop in filters
-ROW Airboxes
-Carbino/Renntech Airboxes
-Power pulley
-Secondary Cat delete
-X-pipe/Straight pipe

Blown63

Headers and a tune is the best way to go, you would just be wasting your time with anything else

ruey220

I learned if you want to envision keeping your car more than 50k miles or 4 years, don't supercharge. the likelihood you will have problems you didn't have with NA increases much more significantly. I put a stage 3 kleemann on my ML55 and the car's been at the mechanic for the past year because of all these reliability issues.

johnnyblaze

Well adding horsepower and reliability never went hand and hand...

If you want to have a reliable car keep it stock..

abcut973

I think Merc63 has put some hard good miles on his weistec stage3 and it seems that he has no problems so far
As far as bolt-on goes you best bet is LT headers/catless mid and tune for a start. You could tweak it with a custom race exhaust combined with filters/airboxes/pulley ... Then even further with ported heads, forged internals, ARP studs.... All you need is a solid budget
Something that is probably not reflected on a dyno is weight saving (battery/hood/trunk/brakes/wheels/exhaust/seats/sparewheels and so on. Think about it too.

Overrated

- Headers and a Tune - What HP/TRQ does that put a P31 car up to. I have been told that with tune only you get 540 HP from EC.

- I was told you have to upgrade the diff if you do the headers.

- Is that carbon delete worth doing?


I am a new C63 owner. Thanks for any info.

Kriston

If you have a P31 packaged C63 you already have a locking diff.

Long Tube Headers + Tune = 420-470 at the wheels.

Abcut is right about the weight reduction, if you cut some weight. Your car will feel a bit quicker.

Overrated

When I spoke to EC they said the car would need a diff if I did the long tube headers.

420-470 rwhp is a big difference. Would it be how aggressive the tune is that dictates this.

average joe

The Limited Slip Diff will help the car put down the extra power.
I noticed a big difference in grip with a LSD fitted.....car just felt much more planted....I went for a Quaife diff which is similar to a Wavetrac one.

roadtalontsi

keep in mind all dyno's are different. If you look at the weistec site some of the numbers may seem low, but that's because it's on a mustang dyno. I can vouch that the numbers they advertise are dead on, as i my car dyno'd exactly what it says it'll do on a mustang dyno. Now go to a dynojet or dynamics or whatever dyno and your numbers will be atleast 5-10% higher

anthonymckay

LSD is not part of the P31 package (though it was part of the previous P30 package that the P31 replaced). LSD must be added as a separate option. Likely cars with P31 will also have this option, but don't just assume.

ruey220

that's true, but then again there's a way to open it up a bit to take it to the threshold of its upper limits which usually on these cars you have some room. Like making a 10-20% improvement over stock is fine, but 50% you've change so much of the engineering and design of all the matching components like drivetrain and something is expected to go sooner than later.

bringing a c63 to black series performance or slightly higher is fine, but taking it beyond sls territory good luck if you want to keep the car and call it reliable.

Ayrton

I have seen pulls that ranged from 396 to 425 on a stock P31 (depending on who and where of course).

I would hope thousands of dollars worth of headers and tune would net more than that.

abcut973

All that should matter is your gain from stock. Not necessarily your output numbers. Too many variables affect dyno results.

Autosport7

If I were to install lt headers and leave the exhaust stock how much louder does the car get?
And what are the dyno proven results from stock boxes to row's?
I already have K&N's btw.

JRSJR65

See my sig for mods and it is simple. "Fast, Low & Loud" I love it as is, wouldn't change a thing.

Diabolis

It is (or rather, was) in Canada but not in the US.

Mort

In Canada the LSD was not part of the P31 Package for the 2010 MY but was added in 2011 to the P31 Package. Not sure if that continued with the facelift cars.

Diabolis

My apologies - I was commenting on the facelift cars. The 2012 and 2013 APX package (which replaced the P31) had it. The 507 also has it.