Discussion
ahaughton said:
Just had the Matt FP IC fitted - blimey what a difference!!!! It's like driving a different car! I'd sort of normalized to the power of the M400 but it now feels more grunty and quite frankly 'faster'!
So - get one bought!!!!!
Not another one "shagging" Matt !
Yeah, I fancy getting the IC too. Just have to wait till I have some more funds.
Got one of these on order to go in with the 1000 mile service.
I'm hearing that power loss could be upwards of 100bhp with the standard intercooler in worst case scenario. Matt, care to comment on this? Is this accurate? If so that's a major loss that'd be very nice to avoid!
I have wondered how much of the M400's marked reduction in shove at higher speeds is down to the aerodynamics and how much is down to the loss of power when really pressing on. I imagine charge temperature shoots through the roof on wide open throttle on a longer straight knocking down power markedly at a time when you'd need every last pony to push the car through the air?
I'm hearing that power loss could be upwards of 100bhp with the standard intercooler in worst case scenario. Matt, care to comment on this? Is this accurate? If so that's a major loss that'd be very nice to avoid!
I have wondered how much of the M400's marked reduction in shove at higher speeds is down to the aerodynamics and how much is down to the loss of power when really pressing on. I imagine charge temperature shoots through the roof on wide open throttle on a longer straight knocking down power markedly at a time when you'd need every last pony to push the car through the air?
Interestingly, at Bedford I found that taking the rear number plate off made a marked difference in the M400 intercooler performance.
The M400 is a bigger beast than standard anyway it seems, and with the number plate off the outlet of the intercooler was "just, everso, slightly warm).
Compared to Gregs 3R which was "really rather warm, perhaps even hot, to the touch" the difference was marked.
However, with the number plate on perviously, even after just two laps the M400's intercooler was "yep - very warm to the touch" and after a good five or six it was "mm - that's really very warm, even slightly uncomfortable to the touch".
Compare that to Alex's M400, with numberplate, that was "cool man, very very cool" all the time and unless you are going to run around with the number plate off all the time then it's a no-brainer IMHO.
On the road I can easily feel a good 50 horses dissapearing, and at times it feels no better than my previous M12, so I can well believe it's loosing a significant amount of power as the intake temps rise. I had heard/dreamt/maybemadeup/urbanmyth that it was ~10bhp per 1 degree rise over 30, but that could be complete and total balony!
J
The M400 is a bigger beast than standard anyway it seems, and with the number plate off the outlet of the intercooler was "just, everso, slightly warm).
Compared to Gregs 3R which was "really rather warm, perhaps even hot, to the touch" the difference was marked.
However, with the number plate on perviously, even after just two laps the M400's intercooler was "yep - very warm to the touch" and after a good five or six it was "mm - that's really very warm, even slightly uncomfortable to the touch".
Compare that to Alex's M400, with numberplate, that was "cool man, very very cool" all the time and unless you are going to run around with the number plate off all the time then it's a no-brainer IMHO.
On the road I can easily feel a good 50 horses dissapearing, and at times it feels no better than my previous M12, so I can well believe it's loosing a significant amount of power as the intake temps rise. I had heard/dreamt/maybemadeup/urbanmyth that it was ~10bhp per 1 degree rise over 30, but that could be complete and total balony!
J
Dear All,
As Joust has said above the powerloss due to IC heat soak is very pronouced, even during road use. The problem is compounded in traffic or when the car is standing idleing as heat soak from the rear turbo 'cooks' the IC.
To give a real world example with an M400 race car the difference in lap time at Donnington between the second lap and the sixth lap (out of 9 laps total) was circa 5 seconds, once we had fitted our IC upgrade along with a few other minor revisions lap times remained much more consistant (to within a second of each other from start to finish).
A loss of 50bhp+ when out on track is entirely possible.
Best Regards
Matt
>> Edited by matt_fp on Monday 5th September 11:28
As Joust has said above the powerloss due to IC heat soak is very pronouced, even during road use. The problem is compounded in traffic or when the car is standing idleing as heat soak from the rear turbo 'cooks' the IC.
To give a real world example with an M400 race car the difference in lap time at Donnington between the second lap and the sixth lap (out of 9 laps total) was circa 5 seconds, once we had fitted our IC upgrade along with a few other minor revisions lap times remained much more consistant (to within a second of each other from start to finish).
A loss of 50bhp+ when out on track is entirely possible.
Best Regards
Matt
>> Edited by matt_fp on Monday 5th September 11:28
Greg,
Whilst a water spray onto the IC would help to reduce the core temperature it won't help with one of the main issues with the standard IC which is its ability to pull heat out of the charge air. The standard IC uses an extruded core which is very poor at abosrbing heat from the airflow passing through it due to its size and surface area. In short whilst it will be cooler with a water spray you are, unfortunately, not doing anything to aid with the transfer of heat from charge to IC core.
Best Regards
Matt
Whilst a water spray onto the IC would help to reduce the core temperature it won't help with one of the main issues with the standard IC which is its ability to pull heat out of the charge air. The standard IC uses an extruded core which is very poor at abosrbing heat from the airflow passing through it due to its size and surface area. In short whilst it will be cooler with a water spray you are, unfortunately, not doing anything to aid with the transfer of heat from charge to IC core.
Best Regards
Matt
Gassing Station | Noble | Top of Page | What's New | My Stuff