09-13-2018, 03:12 PM | #23 | |
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Drives: 2015 BMW 335i x-Drive Auto
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On your tire comment....I made a decision to stick with runflats since the car is used for trips and don't want to deal with an 18" spare taking up the entire trunk. When the current Pirellis (225/45-18) wear out, I'll probably go to larger Bridgestone Driveguard 245/40-18 all around on my stock BMW 400M 18.0" wheels. Did a tire post and had a lot of great discussion on tire size options. Driveguards are supposed to be the best all around runflat, especially in bad weather/snow, according to TireRack and also some BMW dealer folks who I trust. |
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09-17-2018, 07:46 AM | #24 | |
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09-18-2018, 03:05 PM | #25 | ||
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09-20-2018, 03:02 PM | #26 |
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Drives: 2015 BMW 335i x-Drive Auto
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Very good points! Gotta choose and prioritize your mods based on your own goals. Here are a few thoughts...
I hope that I didn't confuse things by my comments about my observed oil temperature. There isn't a direct correlation between upgrading an intercooler and the oil temperature of an engine. The oil temp gauge just happens to be a stock gauge on the dash. I wasn't expecting to see any change in oil temperature at all after the installation of my ER charge pipe and Wagner Competition EVO1 intercooler. When I saw a measurable change, I thought that it was worth posting. Charge Pipe is a must considering how many people post that their stock plastic charge pipe broke. The larger, smoother and straighter (Evolution Racewerks) charge pipe that I have has much better flow so it adds horsepower. Photo below of plastic stock vs ER aluminum charge pipes. Silicone sleeve and two clamps that connect the two aluminum pieces is not shown in photo. I've heard that some charge pipes can be a little off, making them more difficult to install. I went with the ER because of the high quality and great reviews about fitment. The Wagner IC installed easily too. The plastic bottom lip on my M-Sport front bumper just had to be pushed a little forward and the Wagner slipped right in. (a common installation instruction) Intercooler upgrades are attractive because the labor cost is zero if it's installed at the same time as the charge pipe. (The IC has to be removed during the CP process.) An IC upgrade can lower the intake air temperature, lower the intake pressure drop and recover quicker from higher heat situations. (Some of those values can be measured within a high end tune like a JB4) Which means more horsepower, quicker response and much less chance of heat soak which cuts the engine performance until the heat condition is reduced. I noticed the increase in horsepower right away. It was like the increase I noticed with the upgraded intake X about five. Heat soak is a larger issue in hotter climates, hot summer temperatures and hard driving with repeated pulls. I didn't realize how often I was hitting a heat soak situation until after the intercooler was upgraded. Now even on the hottest 98 degree days I haven't been able to notice any power degradation no matter how hard I drive on the street. The stock oil thermostat is supposed to open around 230 degrees to feed oil to the oil cooler to keep the oil operating temperature in that 250 degrees or less range. Over that temp, like if car was racing, is supposed to be when to consider maybe an ER oil cooler upgrade. I was told to avoid any of those aftermarket oil temp thermostats. They are really racing-only oil pass throughs that would hurt everyday driving especially in cold temperatures by slowing oil warm up to engine operating temperature. Downpipes are supposed to add roughly 20-25HP depending on other mods. I may try a catted downpipe when my warranty is up. Not sure yet what the labor cost is? Mike at X-PH is a good person to discuss this stuff with. He has a good handle on the pros and cons of each modification, and which are most cost effective depending on your personal goals. He certainly had a lot of patience with all my questions. HaHa Hope some of this is helpful to you. Have fun with your BMW! |
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