alenpepic

the preface lift c63 doesn’t have longtubes it’s Catless only but it’s on their e85 flex fuel kit. The white c63 has same mods just oe tuned and Benz work headers. We have seen this race before in the past, Jeremy just keeps showing up with his tune.

skratch77

I took all my major mods off,running stock exh with oem cats and just trapped 120 on oe 104 file

I beat my friends full bolt on with my old headers and remus exh and he has v7.

He trapped 117 same night and now he took off all the parts to sell them lol.

Here is my car with only tune 82mm TB and row boxes(stock filters)

gzim335

Street racing LOL
both tunes perform similar stop with the bs please
v7 and oe both trap 127 128 cranked up on kill mode neither is faster than the other so a street race don’t mean crap

skratch77

Your wrong we are talking off the shelf canned tunes.there is nothing that can beat a 5 year old canned 104 map file from oe.

Your friend trapped 130mph on oetune

gzim335

Off the shelf maps all trap 127 128 depending on da n temps
the 130s r done with major weight reduction not apples to apples
we talking
seats battery wheels n e85 or racegas they all perform the same we been done this
maybe if you talked about the old v5 files

skratch77

I dont think tuners are putting out aggressive files like 5 to 6 years ago.

Even oe now has tune for 100 vs 104

PeterA90

Looks like the e85 kit doesn’t do much...

skratch77

I only ran it for a day, was getting random miss fires and running too rich.

PeterA90

Car running better now?

skratch77

I have up on the e85 kit. The injectors I had are 630cc and not 550 like I thought. I was getting negative 40 fuel trims and just gave up and took the kit off

PeterA90

Vrp Kit? Guy doesn’t know what to sell lol

skratch77

I bought the kit used with injectors. It's called eflexfuel kit and looks exactly like vrp kit

hachiroku

with a requirement of 25-35% fuel flow rate you'll need more than a 550cc injector. what injectors were they?

edit: saw your other post.

my response, "i have the same kit and injectors...also OE Tune...should have the kit installed today or tomorrow. can report back with my fuel trims. my car prior to this kit was +15 long term trims."

skratch77

What part number you got on your injectors. Dont forget when you are not on e85 that 630cc is major overkill

hachiroku

its ok...i plan to go HPTuners before the end of the year. HPTuners was not available for the M156 way back when I needed a tune for my LTH's. OE was the highest rated so that's what I went with at the time. haven't had any issues with the tune, just want to get back into tuning my own cars is all.

OEM 997
Bosch EV14ST fuel injector
Jetronic port / 6 Hole nozzle


Flow rates @ 43.5 psi / 3 bar
56.8 lb per hour
429.2 G per min. (N-Heptane)
596.9 cc per min


12,00 Ohm resistance


Bosch # 0280158123 / 62379
Porsche # 99760513201

alenpepic

A efficient way to measure this would be to check spark timing on both tunes but I still think both tunes are different and it should show on a roll race that oe shelf tune is more powerful then a v7 but we would need the variables to be identical for both cars👍🏻

alenpepic

There has been cases of knock being seen on a v7 canned tune from a member on FB, whether it was Bc of poor fueling or excessive advanced spark timing that I can leave to the experts. But he was able to re adjust the tune and all is well now using HP tuners. On my c6 z06 heads cam we use it but I never tried it on a amg, but i trust it.

I really urge ppl to use

hachiroku

trims are all over the place, drivability is fine so far. ECU is still adapting...these photos are from the flex fuel kit with bigger injectors on 91 octane and OE 91 octane map. filled up from 1/4 tank with E85....car is sooooooo fast. hahahahahaha I love it.

also installed unmodified airboxes and new filters. throttle response is more accurate now. can't say it's faster or slower with unmodified airboxes but throttle response is better.

edit: after a bit more driving, drivability improved greatly and trims look much better. car and engine are real fast on OE's tune after the ECU made adjustments to the larger injectors.

AMGonFire

From the video it appears your comparing a tune only c63 to a full bolt on c63. It says nothing about the preface lift with the v7 tune having e85 or cat deletes. Where as the mustang it specifically states that which tells me that car did not have either. So yea tune only vs full bolt on there are your results I could have told you that.

PeterA90

Any misfires? How’s it run on full e? Did you retune for those injectors?

hachiroku

no misfires, only upon first start with new kit, it was missing horribly. i reset my ecu to jump start the ECU to begin trim adjustments...idle isn't always the best and can hunt at times, but isn't unbearable. no retune, ECU can adjust trims for the most part. won't be perfect, but it works.

runs great...anything more than 20% throttle with current mixture of E60 feels awesome and easily on a 91 octane tune is making 15-25hp more.

edit: after a bit more driving, all previous reported issues are gone. engine runs great and drivability is better than ever. trims look good as well for running larger injectors.

alenpepic

Because you were there and u know all those cars personally......lol love how u can just make up stuff like u where on the scene. I didn’t list the preface lift c63’s setup Bc I couldn’t fit everything in there. When i state something, it’s coming from the owner of those cars in the video. I know the owners mods. I know all the mods of all the cars we all converse smh....... it is Catless with e85 and the white c63 has same mods just longtubes but on 93. It would’ve been closer if he had longtubes Bc the e85 would give it leverage, especially if he had a separate tune for it and not just racing off the flex fuel sensor like most do without no e85 specific tune.

plus, most amg tuners won’t even give u that tune because u will need to have correct Ethanol content that was targeted on the dyno, and if u don’t ur gonna be looking at some serious knock from lack of ethanol. Same kinda issues with tuning for meth for supercharged guys for power as apposed to tuning for meth for cooling only.

PayKoHan

Using this topic now, think is suitable.

2 days ago i was on dyno and the car got 555Ps and 680Nm @ 24temp., i think this is a bit too high with my mods, or is that possible? And is the afr (pic) good?

Mods: primar cats removed, agency pulley, E85 kit and map from EC (no E85 map, cuz stock injectors but very aggressive map, E60+ is suggested ). Stock wheels 18" and is a estate 2012 mct.
The new c63s stock limo. is slower in a race. i drive now 7,8-8,1 100-200km/h.

hachiroku

whats your injector duty cycle with the stock injectors? with the 600cc's i'm waaaaaaay safe. haven't monitored til redline, but i'd assume its still way below 80%

BITRBO

So in the first run with the mustang, it looked like the white c63 pulled just slightly... but from the in-car replay of the same run (if it was that) it looks like the mustang edged out by a bumper. Or was that two separate results?

Either way looks like a pretty even match up, despite the big difference in displacement... Crazy how fast those Cayotes can be with similar bolt-ons.