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I put DEI gold heat reflective tape on the bottom of mine (turbo side),and then bent them little so they cover most of the space above the turbo. I dont see how having them vertical would block any heat, and attaching them direct to the turbo would just heat soak the shield faster. With wrapped DP's I dont really have too much heat at the intakes, unless im sitting stopped for long periods.
FWIW i did a bunch of 20+min logs of my ride home traffic with and without the gold tape and saw about a 9° avg drop post heat reflective tape. Dont have any logs from before intakes or wrapped DP's.
Can you post some pictures of what you did? I'd like to see how and what you did. Where did you bolt them to and how much did you bend them?
Can you post some pictures of what you did? I'd like to see how and what you did. Where did you bolt them to and how much did you bend them?
Dont have any on my phone, but i will snap a few this week and post. They didnt need bent much. That nut they install to on the sidewall is a PITA to reach so i bent them up a little to install, then a little past where they would normally sit after the nut is tightened.
Dont have any on my phone, but i will snap a few this week and post. They didnt need bent much. That nut they install to on the sidewall is a PITA to reach so i bent them up a little to install, then a little past where they would normally sit after the nut is tightened.
Thanks for the reminder! They are as far down as they can go without pressing into the insulating foam around the injectors.
I see. So you have the heat shields flat over the top of the turbos. Correct? I like. BMS needs to rethink this design cause as of my install the manufacturer has the heat shields directing the heat from the turbos directly under the air filter feeding straight superheated air. I think I'ma gonna try your design. I actually haven't noticed any heatsoak yet, but I installed my heat shields opposite of manufacturer and the heat following the heat shield up is directed away from the air filters to the wheel well. Thx for the pictures and ideas.
Last edited by Freder8d; Mar 14, 2021 at 03:18 AM.
Reason: Wrong pictures
I think with the rate at which air is ingested by the intake, as well as the turbulence in that area when driving at speed, those shields won’t really make much of a difference whichever way they are mounted.
I think with the rate at which air is ingested by the intake, as well as the turbulence in that area when driving at speed, those shields won’t really make much of a difference whichever way they are mounted.
Absolutely right when moving. At idle I think is where the theory is applicable. The heat rising directly under the air filters would be better directed away from the filters. That was my point.
I just ordered mine for the c400. Will definitely use the Heat reflective tape, but curious if this way of installing has helped?
I'd like to get mine installed to be as effective as possible
No I didn't. So far I haven't had an instance with heat soak. I think the way I've installed it is working. Not to say that Matt's isn't. But as the previous post stated, once moving it doesn't really matter. But for me So Cal traffic can cause heat soak, but then again if I'm in traffic I'm not going anywhere anyway!! Bottom line you won't appreciate it until your on an open road at speed. I think it's way worth it though.
Absolutely right when moving. At idle I think is where the theory is applicable. The heat rising directly under the air filters would be better directed away from the filters. That was my point.
Actually, my point was about the volume of air being ingested even at idle is very high, much more of an effect than the air movement when the car is moving. The volume of air being ingested a idle is high enough such that those small shields would probably have very little effect. Air is being drawn from every which way into the engine bay at a very fast rate.
A typical 3.0L to 3.6L six cylinder engine ingests approximately 4.5 quarts of air every second at idle, and the air comes from every direction and every gap in the engine bay.
A typical 3.0L to 3.6L six cylinder engine ingests approximately 4.5 quarts of air every second at idle, and the air comes from every direction and every gap in the engine bay.
Gallons, not quarts, but very correct for a 3.0 at 700 rpm. Honest mistake
Florida heat and humidity seems to heat soak these in traffic. They work great in anything below ~85 degree weather.
that's another reason. Sound is what you hear gti's produce with a blow off valve.
Basically it seems as if the extra air is just over working the blow off valve's and ends up not producing more power because the air is too hot. So - all bad.
Anything you should watch out for over time with the BMS intakes? I plan to wrap the shield and intake tubes with gold heat wrap
I ordered an intake set and I have plenty of high temp insulation with foil backing that's used in jet engines- so I'll be making whatever shields I need and insulating whatever I can. I may wrap the exhaust side of the turbo with titanium wrap as well while I'm in there.
The amount of air at idle being consumed is misleading- as looking at 1ATM, "gallons" of air sounds like a lot. At idle, the disruption of ambient air in the engine compartment by the intake is minimal at best- but heated air finds it way upwards easily and unrestricted. A 3 liter engine at idle could easily consume all the air it needs from a 3" diameter single tube and you'd only slightly feel the suction if placing your hand near the end of the tube. Keeping the air filter and intake tubes from getting hot and retaining heat is by far the most important part, because objects retain heat. As soon as cooler air is available, the temps will come down instantly if not being also "charged" with the task of cooling the hardware down as well.
A vented hood would do wonders, and at speed the high pressure that builds towards the rear of an engine compartment would vent extremely well if given somewhere to go. Since the lower bumper in the "fog light" area- despite the fact we have no fog lights there- is blocked off from the factory, so I'm considering the aftermarket trim parts that open those areas up to allow air to come through.
Looking forward to seeing how it all comes together. I swore I wasn't going to mod this car much, but as always- it's a slippery slope. Now looking at high flow cats and going from an EC stage 1 to a stage 2.
Last edited by VTSummit; Apr 15, 2023 at 10:24 PM.
I'll take pics of my installation later this week. Will be doing insulation on the pipes, but may look into some heat diverters under the filters. I'm so bad at doing pics- I usually get the parts and go nuts getting them installed and forget to do pics. I've been recording my IAT's on the stock airboxes in relation to ambient for the last several days so I should be able to tell how they compare at idle, low speed and highway speeds.
Intakes are installed. Passenger side heat shield didn't fit well at all... it sits high because of some pipes running on that side of engine- couldn't get even close to installing the front bolt on the shield, even with the provided spacer. That filter has to sit higher because of it as well. Initial thoughts are that it makes a lot more turbo noises and despite cautioning myself not to let placebo effect sway my perception- throttle response seems quicker. I used an adhesive heat shield on the pipes and the bottoms of the heat shields, and intake temps are reading the same delta from ambient that they were with stock airboxes. I'm sure they'll climb when stopped, but initial runs at city and highway speeds show the same difference. All in all, I feel the kit is overpriced for what it is... which keeps me from being super happy with it. Overall I'd give it an "ok" if you've got some $ burning a hole in your wallet. The heat shield not fitting was interesting, considering I haven't seen anyone else comment on that.
I installed mine today too and the passenger side heat shield front bolt was tricky but got it in and tightened down. Also showing about the same IAT at speed. I did end up wiping the end of the pipes and inside the filters where they clamp down with alcohol because they were slippery and didn’t want them sliding off.
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