Celicasaur

I would be amazed if that's the case, but I hope the power can be found today.

betrezra

8 mo is borderline.
BAD fuel no matter how old will KILL power.


GL! Make some AMG POWA!!!

Mag1c Carp3t

They had no way to siphon so I'm now beating on the car on the highway trying to empty the tank. Fill it with fresh 91oct and get on the dyno. The tuner also added a few degrees of timing this morning.

BLKROKT

Bet you wish you had some Boostane now

Or a fresh bag of Doritos

Mag1c Carp3t

Alright so here are today's runs compared to last years best run. This is with new oem ngk plugs and fresh 91oct fuel. I will be talking to the tuner to see if he can get the car on his dyno and retune it.

Considering the conditions and different temperature possibilities I wanna say we could be running same as before but the port and polish has yeilded zero gains

Celicasaur

And this is including the additional 'few degree's of timing' from earlier in the afternoon?

Damn....I'm stumped

At least you were able to get it back up to nearly 490whp which is still part of a pretty exclusive club tbh.

Mag1c Carp3t

nope that 490whp is last years best before the port and polish. We are comparing to that number. Yes the tuner had added it through the flash he didn't do a full retune.

skratch77

not bad and probably the highest numbers on 91 oct.If you lived near me you would break 500 with our 93 we have here.

do you have a p31 development car? if so you can see if your tuner can rev it out a little more.im running mine to 7500 and makes power right up to about 7k but I'm still stock exhaust

Celicasaur

Ahhh i see......well...there's still hope then. Fingers crossed he didn't add it to the correct area of the map via the flash loader.

mr747

You can empty fuel from rail you need a hose and a fitting

Mag1c Carp3t

Yeah the car is still strong and the power decrease can't be felt. No P31 but I'm trying to see if the tuner can increase the rpms.

Mag1c Carp3t

good to know. I just ran the car empty and refilled her up. Did some hard pulls so the ecu would adapt more.

mr747

Nice I still recon u will need a retune bud

Savage-wp

Good luck. I hope you come right and hit the 500 mark.

the_indian_kid

Re-tune for sure, got EC to PnP with the retunes and gained some ponies on the 507. Atleast it's supercharger ready.

mr747

It's supercharge ready without PNP

C63fora2w1

How much experience does this tuner have with the MB W156 ? Have you considered going to Eurocharged ? It seems like those guys have a good handle on this motor and know what they are doing. I have heard of guys getting 500 rwhp with just headers and exhaust with a full port and polish you should be 525ish...

chrisridebike8

Really? Even Dads C63 with probably the most NA mods of any barely cracked 500 whp. He basically had headers, dyno tune, straight through exhaust, and race gas. Most headers/tune cars get around 460-480 whp. The one BS that claimed over 500 whp with just FI headers/ROW/tune was pretty far off. That car put down something like 465 whp IIRC when Auto Talent actually did a baseline vs modded dyno. No C63 with just headers and a tune will crack 500 whp. I'd bet my house on it. Headers/tune/flex fuel will get you over 500 whp NA without PNP, but that's the only way to crack 500 without PNP

BLKROKT

Just stop.

Jasonoff

Has a C63 for a few weeks and...


You need to stop with the misinformation (this is not the first time). New members will believe it and spread the cancer...

skratch77

this guy has one of the strongest cars on 91 Oct if not the strongest I have seen.im pretty sure his tuner knows wtf he is doing lol.

please enlighten us with a 500whp car on 91 with just tune and headers.

525whp is what a stage 1 supercharged car puts down lol

betrezra

OP... also note the weather temp/DA on the different days your tested car on dyno. This can make a diff.

If base-line was 40 deg good DA VS now it's getting rather HOT in Houston.... you can lose some here.

Mag1c Carp3t

Yeah I believe the conditions are what changed the numbers. I may not have realistically lost any power but definitely haven't gained any "yet." The shop that dynos my car recently did a e63 m157 with very impressive numbers on 91oct. I may jump to that tuner and also do e54.

Here is that cars sheet. Only mod is downpipes.

hachiroku

lol some guys are just ridiculous. if you wanna break 500whp it's as easy as going to a dyno that reads high. HP figures mean nothing unless you are doing direct comparisons of all cars on that same dyno. also things as simple as temperature variation can cause huge false figures. if the dyno air temp has a higher value than actual, it'll make the dyno read high on a Dynojet. something like that.

betrezra

Agreed Hach..... also dyno operators can 'manipulate'.... I mean adj for sea-level to make a customer feel good. ; )