OverBudget

Dropped it off this morning...

- Shorty headers
- Both primary and secondary CAT's being removed, with a cross pipe being installed
- VR530 (Underdrive pullies, HiFlow air filters, Phenolic Heat spacers and Intake temperature relocating harness)
- ECU Tune and speed limiter removal

The car will be dyno tested on Wednesday morning after everything is installed. I am told they are predicting 570 flywheel hp and 475 rwhp.

Will post dyno sheet once I drive back from SoCal to Scottsdale...

phranksmbz

do these guys do regular w204s?

bigbodybeeenz

Noob question:

Will you be able to pass smog with that setup? Also, I thought you were getting a LSD as well.

BerBer63

Is there a baseline dyno being done to compare? Can we get a sound byte or video of that exhaust when its done?

Sounds sick, can't image so much more power in these cars

OverBudget

1. I would assume they do regular W204's. Confirm w/ Vadim at (949) 584-4446.
2. I was going to get a Quaife LSD, but Quaife USA nor its' sales reps can confirm if it will FOR SURE fit the C63. They don't want to open it up and spend all day to find out it can't be done, so this may have to happen on another trip.
3. I'll make a video of the exhaust at some point.
4. Don't know if I'll pass smog or not. My car is registered in Oregon and driven in Arizona primarily, so we'll find out 2 years from now... I'm keeping the CAT's just in case.
5. Lastly, as far as a baseline dyno (this is where people are going to not like my answer), I don't think we are doing one SPECIFICALLY on my car. VRP has done several, and I even think MHP agrees with the numbers. The C63's are producing about 374 rear wheel horsepower.

white_glass_top

i email them, about C300/C350 aftermarket products, they are in the works right now, plans due to have something by the end of the yr early Jan.

Headers, and a complete exhaust system.

Klinh

I wouldn't do this mods if I was you. My friend car C55 still have the "check engine" light issue to this days with the CAT's mod.

Flame3g

hope every thing goes well

1st amg

Oh boy, congrats on going all out, cant wait to see the real numbers, and please give us a video, good luck.

regor60

So, they're predicting a 100 RWHP gain ? ookay...

OverBudget

We know the cars with the same engine can make 505 to 518hp. So just an ECU tune to stock for an E/S class is going to produce a 50-60hp gain. Headers will probably add 25. Removing the CAT's may add 5 more. So that means the relocating the thermostat, better pullies, heat spacers, and better air filters only have to provide about 10 - seems reasonable to me.

mrwolf

Cant wait to see the results. Regardless of all the numbers, your car is still going to be one ridiculous beast after all that work gets done.

Congrats

gravedgr

So you're saying you'll have no real idea of the actual gains. With a little tweaking, anyone who knows how to run a dyno can create a range of at least 10% variance. Of course, no tuner is ever going to set conditions where the variance is towards the low end, so they will make sure yours dynos as high as possible. Without a baseline, you have no clue if you picked up 50 hp or 100 hp.

Horsepower mods are not necessarily (and almost always are not) additive in their gains. If you take 20 +5 hp mods and put them on a car, you DO NOT get 100 hp. You get about 5-15 hp. You seem like a smart guy, so you surely are aware of diminishing returns.

I'm hopeful for you, but I'm very doubtful you will pick up 100 hp and it looks like will never know.

NORTH 44 C63

I have faith... go get em!!!

OverBudget

Gravedgr: I appreciate your comments. Multiple cars, both from VRP and others, have agreed that a stock baseline dyno for a C63 is +/- 1 or 2hp from 374 rwhp. If my car tests out at 474 rwhp, then it's a 100 rhwp gain. If it shows 80 or 90, then so be it. I think the gain (and consequential performance) will be worth the money I am paying.

I will summarize on Wednesday night or Thursday with dyno graph, pictures, video, and whatever else I can come up with.

Hans Delbruck

Any chance we will get numbers/chart with just the tune alone?

Regardless, I'm looking forward to your impressions!

OverBudget

Hans: Sorry, don't think so. You can call Vadim though at VRP and see what he could tell you.

Surf City, USA... Is that Huntington Beach? I was there tonight, farmer's market on Main street, out on the pier, etc. SoCal has been nice, but can't wait to get my car back and be back in Scottsdale.

gravedgr

I guess I didn't explain my point very well. The baseline isn't to see how much your car makes (as all these numbers are subjective) - its to see how much you make on THAT dyno at THAT time with THOSE settings and atmospheric conditions. I have no problem agreeing that tests show 374 rwhp to be the average dyno result. Just hypothetically, lets say you do a 474 rwhp pull post-install - you have no idea if your baseline would have been 374, 354, or 404 on that same dyno.

Mods are all about +gain from baseline, not some particular peak number achieved from a single pull (let me clarify - we want gains, tuners/marketing want "best case" theoretical max results). Those kinds of results are very easy to fudge. I'm just very skeptical as I have seen a large number of "objective" dyno results used as proof to sell products which when tested scientifically by a third party produced ZERO results and often led to detrimental performance.

I'm only asking as I'm considering similar mods, and this kind of scientific (as good as you can get from a dyno) testing is what I require to spend the $$$. For you - so long as you're happy, that's all that matters. Good luck!!!


PS - I would almost best $50 they'll doing pulls on a Dynojet. If you happen to get a peak, look at the model.

Hans Delbruck

If OverBudget goes to the same shop Vadim used when he dyno'd my car (and I bet he does) then he will be on the same dyno. My C63 dyno'd at 374 to the wheels on that dyno, and yes it was a Dynojet.

OB, yes I'm in HB. But I was born and raised in Arizona.

edit: BTW my dyno was on 91 octane.

MHP

Hey Hans, how many miles did you have on yours at the time? For reference mine put down 376 then 373rw SAE (back to back) on a DJ in 5th gear with 93 octane and filters at 1000 miles. Hood down, 2 fans.

Thanks

Hans Delbruck

You know what.... I can't remember exactly! But it was right after I did my first oil change so I'm going to guess it was around 1500 miles. One fan and I'm pretty sure my hood was open. All filters, completely stock.

OverBudget

Yes, it will be the dynojet. I'm running 91 octane also. I'll have the hood open, trunk open, doors open, tic tacs in my mouth, etc.

374, 373, 376 - it's all the same to me. Take whatever number I get for the final number and take it +/- 5rwhp if that makes anyone feel better...

Sorry for the sarcasm. My bottom line is that the cars are dyno'ing at ABOUT 374rwhp on a dynojet. Whatever I get minus 374 is the gain (in my mind).

MHP

I agree with the consistancy.

NORTH 44 C63

Hey James,

Soooooo, do you have any results. Can't wait to find out.

Its like Christmas Eve in September LOL

nlpamg

nice, I can't wait to see the results!