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Hey Guys,
i am currently modding the oem intake. A colleauge of mine hast already made huge measureable improvements by cutting a hole in the bottom of the box in a special place (constantly 0.2 sec faster 100-200 kp/h on Stage 2! = that means about 18-20 hp)
Now we try to get our the max. of the oem Intake. I did on my own Carbon Fiber intake spacers (see picture). But in the upper part of the airbox there is a strut in the middle above the air filter. The upper part of the intake is already
so thin that i think, removing this strut would help a bit for the airflow. Did anyone of you already removed this strut? (see picture 2) The only thing i worry a bit, that the strut is need for stability, that the plastic does not wrap because of the heat. What do you think, can i remove the strut?
Problem is that the OEM intake is so restrictive that at high rpm there is a negative pressure in the intake. By adding a hole it can take air from the enginge compartment.
if anybody now says: "hot air comming into", that does not matter at all. The m177 has water cooled intercooler wich cool down the air perfectly. And the construction of the m177 is a "hot V", so all the heat is inside the V and the airboxes are outside. but that is a other theme i will explain soon here in the forum. I am just new here.
My Question is, if the intake get unstabel by removing the strut.
Don't get me wrong, I think that kind of expenditure for that small amount of horsepower should only be done after other mods that have a much better "boost per dollar" ... but I you're "going all out" ...
Most of the gains come from increasing the cross sectional area post filter. As long as all the air is flowing through the pancake style OEM tube you will be severely limited.
Don't get me wrong, I think that kind of expenditure for that small amount of horsepower should only be done after other mods that have a much better "boost per dollar" ... but I you're "going all out" ...
Sorry but you are wrong. First of all in the clip of eventuri you can see what i said, the enginge is pretty hot because of the "hot v construction" and outside the enginge the temperatures are low. So i dont unterstand how you want to refute my argumentation with this?
And 2nd even if the whole engine compartment would be hot if would say nothing on a picture with a infrared camera. You need to log the temperature after the air intercooler. Once with closed intake system then with open intake system. And if there would be siginficant changes you can say anything about it is good or not. After the air intercooler there is less then 1°C difference. The eventuri system is well known, but not worth the money.
Originally Posted by ModalWorks
Most of the gains come from increasing the cross sectional area post filter. As long as all the air is flowing through the pancake style OEM tube you will be severely limited.
Ofc you are right, intakes without the pancake style tube are better. But here in Germany you cant get "TÜV" on these, so it is not legal to use them.
But i have to contradict your first Statement. There are some restrictions in the OEM Intake, that is true. But the all biggest restriction is before filter and not after! The area under the filter is not big enough and because of this, there is a under pressure at high rpm. And that is the most hardest restriction in this system. That has already been logged and verified by some serious tuners and developers. If you can can solve this, you can get huge gains of hp. If the filter gets enough air, the turbos will soak it even through the thin oem upper intake tube. But of course a bigger tube to the turbos will also help. Here in Germany most of the guys use the OEM intake system with BMC Filters up to 800hp.
PS: I will pm you for your downpipes. I saw you are shipping to germany.
Don't get me wrong, I think that kind of expenditure for that small amount of horsepower should only be done after other mods that have a much better "boost per dollar" ... but I you're "going all out" ...
Sorry but you are wrong. First of all in the clip of eventuri you can see what i said, the enginge is pretty hot because of the "hot v construction" and outside the enginge the temperatures are low. So i dont unterstand how you want to refute my argumentation with this?
And 2nd even if the whole engine compartment would be hot if would say nothing on a picture with a infrared camera. You need to log the temperature after the air intercooler. Once with closed intake system then with open intake system. And if there would be siginficant changes you can say anything about it is good or not. After the air intercooler there is less then 1°C difference. The eventuri system is well known, but not worth the money.
Originally Posted by ModalWorks
Most of the gains come from increasing the cross sectional area post filter. As long as all the air is flowing through the pancake style OEM tube you will be severely limited.
Ofc you are right, intakes without the pancake style tube are better. But here in Germany you cant get "TÜV" on these, so it is not legal to use them.
But i have to contradict your first Statement. There are some restrictions in the OEM Intake, that is true. But the all biggest restriction is before filter and not after! The area under the filter is not big enough and because of this, there is a under pressure at high rpm. And that is the most hardest restriction in this system. That has already been logged and verified by some serious tuners and developers. If you can can solve this, you can get huge gains of hp. If the filter gets enough air, the turbos will soak it even through the thin oem upper intake tube. But of course a bigger tube to the turbos will also help. Here in Germany most of the guys use the OEM intake system with BMC Filters up to 800hp.
PS: I will pm you for your downpipes. I saw you are shipping to germany.
Sorry but you are wrong. ...
... You need to log the temperature after the air intercooler. ...
Prove it ... post some real data. FYI, intercoolers are not "absolute" ... they only reduce the air temperature. Feed them hotter air and you'll still have hotter air going into your engine.
If you do some searching, you'll find that there are aftermarket intercooler radiators that improve the M177's intercooling ... which implies that the stock intercoolers could do better even with the outside-the-engine-bay air.
Prove it ... post some real data. FYI, intercoolers are not "absolute" ... they only reduce the air temperature. Feed them hotter air and you'll still have hotter air going into your engine.
If you do some searching, you'll find that there are aftermarket intercooler radiators that improve the M177's intercooling ... which implies that the stock intercoolers could do better even with the outside-the-engine-bay air.
Only because upgrade intercoolers are sold they are not necessary There is so much crap you can buy in the internet that does absolut nothing. Just to bait people to spend their money. On road use the stock intercoolers are more then enough.
So because so many asked here are some Picture:
1. Mods
Removing the strut in the upper part of the intake
Using bmc air filter (they are the most flat)
21mm intake spacers
Holes in the front and on the outside of the intake (away from the enginge)
A little hole in the bottom.
2. Results
heavy suction noise (you can hear inside the car, how the enginge breath. really sick!)
throttle response is way more agressive
And the most important thing: Yes, it makes the car faster! Especially if you are on full throttle and high rpm (5000+)
100-200 km/h you can see impreovements of 0.25 - 0.3 sec compared to only BMC Filter!
Measured what i expected. Stage 1 Tune with OEM Airbox Mod 100-200 kph: 6,57 --> 6,63 sec.
The environmental conditions were very bad: 515 m obove sealevel, 961 hPa, 10°C, DA: 903
Measured what i expected. Stage 1 Tune with OEM Airbox Mod 100-200 kph: 6,57 --> 6,63 sec.
The environmental conditions were very bad: 515 m obove sealevel, 961 hPa, 10°C, DA: 903
Good job thats a great time 👏 Which tuner?
Do you get more turbo sounds with the mod?
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But here in Germany you cant get "TÜV" on these, so it is not legal to use them.
