[limeypride]

Originally Posted by ctelimad

Mmmmm
I had jb4 on my m8 non comp vert for a long time and no issues at all
I run map2 as a daily with E mix and runs really good
I push it every now and then (everyday lol) but not crazy
Now i got an m8 coupe comp and i am looking to see what map and fuel should i run

Mmmm, what?

Map 6 is entirely custom; map 2 is Terry's--I'm unclear what you're questioning here?

[ctelimad]

Originally Posted by limeypride

Mmmm, what?

Map 6 is entirely custom; map 2 is Terry's--I'm unclear what you're questioning here?

I am not questioning ,
i am just wondering what map i should run on the comp
I was thinking to go map 6 custom with terry but after ur story i am afraid to push the limits

[limeypride]

Originally Posted by ctelimad

I am not questioning ,
i am just wondering what map i should run on the comp
I was thinking to go map 6 custom with terry but after ur story i am afraid to push the limits

It’s a risk but, to be clear, I’d been doing this for 18+ months and thought I had a handle on it. In retrospect, I think that was mostly true of the software variables and interplay between them but my desire to go faster overshadowed my ICE expertise and I pushed too far. Software engineers (me) playing with hardware limitations they only partially understand and even then, at a rudimentary level is a recipe for boom. ����������

[mpop302]

Originally Posted by limeypride

It’s a risk but, to be clear, I’d been doing this for 18+ months and thought I had a handle on it. In retrospect, I think that was mostly true of the software variables and interplay between them but my desire to go faster overshadowed my ICE expertise and I pushed too far. Software engineers (me) playing with hardware limitations they only partially understand and even then, at a rudimentary level is a recipe for boom. ����������

What exactly do you mean by snake oil and how did you push it? Customizing the mapping past limits?

Definitely fear putting something like RC on and risking engine problems in my car

[mpop302]

Originally Posted by ArabianOak

Pretty happy with the results considering how cold the weather is...it's spinning and short shifting from 1st now, so once it warms up i think a 10.2 or 10.3 is achievable with good DA...car feels really strong.

93 octane, setting number 7 on the racechips...

dragy video...

https://www.youtube.com/shorts/FRfS7aOixX0

What were stock numbers by chance?

[specracer]

Saw this post at SVTP (likely not many that cross over). Car is surprisingly quick, well done.

[ArabianOak]

Originally Posted by mpop302

What were stock numbers by chance?

not sure, i ran it after i installed the RC.

[Vic55]

Originally Posted by mpop302

What exactly do you mean by snake oil and how did you push it? Customizing the mapping past limits?

Definitely fear putting something like RC on and risking engine problems in my car

It wasnt RC on his car .... one can not customize RC- its a basic piggy.

And more variables in place but its his story to tell.

[r33_RGSport]

RaceChip is configured to run at a minimum of California crappy highly taxed 91.
As your engine's default, the higher octane, more power output. But, there is still a ceiling limitation.
So, RaceChip map 7 with higher Octane (100RON) will give you more power.

Unlike the more expensive and tweakable piggy, it has faster processing speed and better hardware in general.
Slow processing speed trying to juggle with a lot of data is not a good combination.

If you ever find my dyno post, it is always on Costco California 91 before and after.
Not before with 91 then after with 93 or Exx mix.

[limeypride]

Originally Posted by mpop302

What exactly do you mean by snake oil and how did you push it? Customizing the mapping past limits?

Definitely fear putting something like RC on and risking engine problems in my car

I'd configured the JB4 to boost levels suitable for 100 octane race fuel that I used to be able to obtain. I lost that source and was recommended an octane booster--so I tried it and, sure enough, it worked... for a while and then apparently it didn't or I pushed it beyond its compression limits.

As others have said in my absence, this wasn't a RaceChip, it was a JB4--the RaceChip has precisely 3 options: ON, OFF and tuning map number. The JB4 has 100s.

[MiamiM8Comp]

Originally Posted by limeypride

Love the optimism but unlikely. The cold weather is bolstering your boost but killing traction. When that weather changes, you'll gain traction and lose boost. Unless you've got other mods in play, you're close to max'd out on an RC. If you want more, go with a JB4 (that rhymed, unintentional but I'll take it).

To get what you're hoping for, 60ft would need to be in the high 1.5s and the 0-60 tends to follow suit dropping to mid 2.5s. 1/8th mile around mid-to-high 6s and you'll get there but I've never seen it with an RC alone. My personal best is a 10.33s @133mph in an F90 M5 Comp with JB4; 10.37 in a comparable M8C GC.

Hey Limey, do you have by any chance the boost settings on the JB4 that got you the 10.3’s? Did you use race gas?

Thanks

[limeypride]

I don’t anymore since I no longer have a JB4.

I initially used race gas and then my supplier closed up shop so I tried octane boosters—read the rest of the thread to see how that went (not well).

[MiamiM8Comp]

Originally Posted by limeypride

I don’t anymore since I no longer have a JB4.

I initially used race gas and then my supplier closed up shop so I tried octane boosters—read the rest of the thread to see how that went (not well).

I just read it. Ouch, blown up engine? Not cool at all!! Glad that all is well now!!
I’m running E30 blend for daily on Map 3 with great results so far.

[ArabianOak]

can't believe with all the safety crap on these engines, it's even possible to blow them up via piggyback. glad all is well now though! I have been there with other cars, one of the worst feelings ever.

[limeypride]

I’d argue one of the worst sounds, too.

[ArabianOak]

Originally Posted by limeypride

I’d argue one of the worst sounds, too.

yep...blew the engine on my z06 a few years back...wasn't even on it when it happened...bad heads on many of them...under warranty thank god.

when I got out of the car and saw antifreeze coming out of the intake I almost threw up...that bad. haha.

[mpop302]

Originally Posted by limeypride

Yup, I hear ya but I've never seen an RC-tuned S63TU get near the 2.5s. It took custom map 6 tweaking on a JB4 with snake oil, 92 octane pump and WA state weather temps to get there. Look at the JB4 or an ECU tune because the wealth of evidence out there doesn't indicate an RC will ever get there.

As Vic implies, it's not intended to--it's plug'n'play noticeable power bumps but that's it.

Wrt/ the 100 octane: the RC simply won't take advantage of it--you'll need more boost and the RC won't make/let that happen.

Someone recently posted a site to find e85/100 octane fuel near you

To my surprise, my nearest gas station is one of the few locations to offer e85 🤯

What are the pros and cons of running this vs the 91 fuel offered at best in my area? Non-chipped

I feel like I’m getting something wrong bc I always thought “race fuel” was more expensive, but it’s listed as $3.29 a gallon which is cheaper than alternatives

Is this different from e85r? In regard to power/octane?

[ArabianOak]

Update...ran a 10.5 today with still some spin coming out the hole...I really don't think i'll do much better as I as low on gas and had -1200 DA. 10.4 is def possible under perfect conditions...

did a half mile run too...16.7@160mph...is the car limited to 160? it felt like I hit a limited near that speed.

videos...def rec race chip...easy power for the money.

https://www.youtube.com/shorts/UPzKbVATaNg

https://www.youtube.com/shorts/6fcJ1k6iceg

[ArabianOak]

went for the glory run this morning...10.44@132

very impressed considering this was on the street.

DA was -8 feet.

[Bulent Ali]

Usually if you have carbon ceramic brakes , your M8 should have de- limiter. If it felt like you hit the rev-limiter at 160mph , then , yes , rev limiter is 155mph.

[ArabianOak]

Originally Posted by Bulent Ali

Usually if you have carbon ceramic brakes , your M8 should have de- limiter. If it felt like you hit the rev-limiter at 160mph , then , yes , rev limiter is 155mph.

is there a way to get the de-limiter removed?

[MacOSR]

The Race Chip makes a huge difference and I think it’s worth it. I have it on two cars (16 X5M, 21 M5C) and I’m going to add it to the M8C Vert that I just picked up. I forgot how much of a difference it makes until I picked up the M8 this past week. I’ve always run 93+ fuel and map 7. The only thing I am careful with is the X5M because the half-shafts can be an issue when pushing it from a stop. My only other mod on the M5 and M8 is the M performance exhaust.

Edit: Well, after typing that up I should mention on the M5 I have all the intake mods as well…Dinan & Venturi which also helped.