Stage 2 Temptation

[neilparf]

No it doesn't. I had Stage 2 done by MRC last year and the tumble flaps are not part of the Stage 2 package.

Totally correct. The only way MRC would remove the flaps is to simply not replace them when performing a carbon clean. Doug asked If I wanted mine back in and declined to potentially reduce areas prone to carbon deposits.

The 'jerk' is circumvented by simply not being in sport and for me it's very drivable and seems to shave off the 'sensitivity', so to speak - but maybe that's just my car. Sport; it's impossible, but non-sport low rev's it's just fine.

Would it have anything to do with exhaust valves closed and any back pressure?

[neilparf]

The ability to be doing 70mph and just roll-on to 100+ with a gentle squeeze is lovely.

This. Is. Stage. 2. For. You.

[MikeFish]

The thing that made a HUGE difference, and not always in a positive way is having the sport button go 100% throttle in the lower gears and it can also be done to make the throttle linear as well. As stock it is set as something like the first 50% of pedal movement only equates to 25% throttle opening - apologies if these figures arent quite right, its been a while since I thought about it. Having these things changed is great when you really want to "push on" and also makes blip shifts and heel & toe much easier, more natural and quicker. The bad thing is that it also makes the car a total bastard in traffic or when trying to pull away anything other than extremely gently or quite violently lol

As far as I know a stage 2 MRC map will give you full throttle in the lower gears in both Sport and non-Sport mode. The only difference is the throttle response is much sharper in Sport mode. So the full throttle thing is always there, and the extra turbo-like feel of sport mode is just the sharper response. I may be wrong but this is what I thought.

[MikeFish]

I can only echo Ross's experience. Stage 2, no tumble flaps but standard manifold, forget you are in sport mode and the car jumps around like it's on Walter White's finest...

That said, it's not every time and there genuinely is a window (albeit small) that throttle etiquette no matter how subtle will get the car jumping. Out of sport, it's just fine and this is really only around town when, at times I want the exhaust flaps closed and noise to a minimum. Other than that, warm engine, sport, revs up at 4K+ and I wouldn't have it any other way...

I do like throttle response and the associated torque in say 4th/5th - it can pull like a train. Thats the up trend to the small aforementioned down side...

Didn't Ross mean that having no flaps means it's jerky at certain speeds & revs in normal mode too?
Clearly sport mode is not ideal for driving in traffic but I sometimes struggle to keep it smooth when cold in low speed / gears (i.e. 1st or 2nd gear at about tickover) even in normal mode, and I have my flaps still, so I'm wondering whether it is actually something else causing this for you Ross and not your lack of flaps?

[RossDagley]

I can only echo Ross's experience. Stage 2, no tumble flaps but standard manifold, forget you are in sport mode and the car jumps around like it's on Walter White's finest...

That said, it's not every time and there genuinely is a window (albeit small) that throttle etiquette no matter how subtle will get the car jumping. Out of sport, it's just fine and this is really only around town when, at times I want the exhaust flaps closed and noise to a minimum. Other than that, warm engine, sport, revs up at 4K+ and I wouldn't have it any other way...

I do like throttle response and the associated torque in say 4th/5th - it can pull like a train. Thats the up trend to the small aforementioned down side...

Didn't Ross mean that having no flaps means it's jerky at certain speeds & revs in normal mode too?
Clearly sport mode is not ideal for driving in traffic but I sometimes struggle to keep it smooth when cold in low speed / gears (i.e. 1st or 2nd gear at about tickover) even in normal mode, and I have my flaps still, so I'm wondering whether it is actually something else causing this for you Ross and not your lack of flaps?

Good spot Mike

My car is a little jerky when cold even in non-sports mode, but it wasn't before the flaps were removed/car was remapped. It's hard to say if it's down to the flaps alone of course, but I don't remember it being like that before the work was done. For sure - it's horrible in sports mode when cold. Non-sports mode it's perfectly drivable, and it's probably me just being overly anal. It's hard to quantify really. So slight sometimes you don't notice, and other times perhaps I just notice it more. Either way, once the engine is warm it's ok

[leadfoot]

Has anyone had the Stage 2 done "remotely"? I know MRC requires the CPU to do an initial install of the software... then when I carry out the manifold swap, they can install the Stage 2 map and dyno remotely... at least that is in theory.... as I have yet to hear someone doing it this way...
Thanks Mark

[MikeFish]

Ross, I wonder if it's something to do with the map? A downside of the linear response? Do you still have your secondary air injection? I don't and maybe it's related to that?

[RossDagley]

Has anyone had the Stage 2 done "remotely"? I know MRC requires the CPU to do an initial install of the software... then when I carry out the manifold swap, they can install the Stage 2 map and dyno remotely... at least that is in theory.... as I have yet to hear someone doing it this way...
Thanks Mark

A stage 2 map is written for your car with the mods it has at the time. Your car that's got the same mods as someone elses might have completely different requirements. I don't think what you want is possible.

Ross, I wonder if it's something to do with the map? A downside of the linear response? Do you still have your secondary air injection? I don't and maybe it's related to that?

I've had SAI removed also yep.

[neilparf]

A stage 2 map is written for your car with the mods it has at the time.

I think that's contributing to the fact each map/engine/car along with driver style and the associated idosyncratic nature of each, means the 'drive' is different. For me, the 'jerk' there when cold and low revs in sport...

[neilparf]

Clearly sport mode is not ideal for driving in traffic

So true, but exhaust flaps open and the associated noise can be fun at times!

[MikeFish]

Clearly sport mode is not ideal for driving in traffic

So true, but exhaust flaps open and the associated noise can be fun at times!

I agree which is why mine are permanently disconnected... although that still makes it barely audible in the car (or even outside probably).

I do love the sound of the JC weldfab though after hearing Nick's at the Midlands meet!!

[Surrey Sam]

Clearly sport mode is not ideal for driving in traffic

So true, but exhaust flaps open and the associated noise can be fun at times!

although that still makes it barely audible in the car (or even outside probably).

Tried turning down your stereo Mike?

[MikeFish]

Tried turning down your stereo Mike?

LOL, since removing the Tubi all I can hear is the air filter!.. and the stereo of course.

[Deano_123]

Anyone know what MRC's current wait time is? I'll be calling them tomorow to book mine in.

Can the standard backboxes be retained at stage 2 or are they a restriction?

[MikeFish]

Anyone know what MRC's current wait time is? I'll be calling them tomorow to book mine in.

Can the standard backboxes be retained at stage 2 or are they a restriction?

The standard exhaust is pretty good hence why people don't get much more power by changing them. A full 2.75" type system will bring the most gains but it is unlikely you will see anything other than minimal gains from back boxes alone.
If you want car remapped and it is standard then you'll have the stage 1. If you have any mods then it's a tailor made stage 2 map but standard exhaust is fine.