SRM Intake install step by step

[Hofahome]

How does your new design compare to your previous LME design (https://www.audizine.com/forum/showt...ght=lme+intake)? I'm running that design with the 3in SS pipes, Injen filters, and a 1/16in aluminum heat shield on my APR Stage 2 S6 right now. At first I noticed a lot of whooshing sounds under the hood and some improved throttle response. However, over the summer (after summer vacation), I thought my car was pulling weaker than before. So just recently I logged some numbers and noticed high IATs (Up to 50.3 °C Intake air temperature in intake manifold bank 1 and 90.0 °C Intake air temperature before throttle valve: raw value) and timing pull up to -5.3 degrees (Timing angle retardation cylinder 4). Perhaps I should add that the timing pull was at just 55% throttle since I logged on my commute home and did not have a chance to go WOT. Since I'm a newbie to logging I'm not sure I logged the right values. Now that the outside temperatures are lower, the car seems to pull stronger again (butt-dyno). So I'm wondering if the high IATs and timing pull were a normal summer thing or if I'm pulling hot air from the engine bay. When I did my logging, I was running BP Ultimate 93 octane but have since switched to Shell V-Power Nitro+ Premium. Could the gas make a difference or is it just the lower outside temperatures? I guess I have to do some more logging. Any thoughts?

Your High IATs and pulling timing is most likely from you pushing the turbos to their max (probably out of their efficiency zone) and thus creating a ton of heat; inadequate stock charge cooling system to keep IATs in check; and exacerbation by high ambient heat which would affect both pre turbo charge and cooling at the air to water heat exchanger.
You probably need to look into options for upgraded cooling (ie. Killer Chiller, water meth, or better components of the cooling system). I’m about to install w/m kit because it will hopefully allow both benefits of IAT control and increased octane. Downside is it is one more thing to fill up and monitor.
Jury is still out on my current intake setup but so far the noise is much better controlled. Throttle response is same as the open air style. I will post up more info when I get it to where I like it.


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[hmuller]

Your High IATs and pulling timing is most likely from you pushing the turbos to their max (probably out of their efficiency zone) and thus creating a ton of heat; inadequate stock charge cooling system to keep IATs in check; and exacerbation by high ambient heat which would affect both pre turbo charge and cooling at the air to water heat exchanger.
You probably need to look into options for upgraded cooling (ie. Killer Chiller, water meth, or better components of the cooling system). IÂ’m about to install w/m kit because it will hopefully allow both benefits of IAT control and increased octane. Downside is it is one more thing to fill up and monitor.
Jury is still out on my current intake setup but so far the noise is much better controlled. Throttle response is same as the open air style. I will post up more info when I get it to where I like it.


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Thanks for your insights. I drive grandma style most of the time since the car is my daily driver and rush hour traffic around here doesn't allow much WOT. So I don't push my turbos to the max very often. I certainly did not the day I did the logging. However, I totally agree with the inadequate stock charge cooling system and an APR CPS (or perhaps the MercRacing heat exchanger you have) will likely be one of the next mods to my car. I was also thinking about the SRM pipes that connect directly to the stock intake (and don't pull hot air from the engine bay) but I haven't seen much info on them yet.