This page is dedicated to BMW Mod Guides. Guides range from 500+hp N54 bolt-ons, N54 port injection, S55 turbo guides, B58 downpipes, and plenty more. Check out all of the awesome BMW turbo engine performance content.
We believe BMW did an excellent job with the E90 and E92 chassis. They might not be the lightest cars compared to the previous 3 series models. However, the E9x chassis offers great balance and the power steering feels flawless. Of course, with most E90 and E92’s nearing or surpassing a decade old a lot…
We’re following up our S55 twin turbo upgrade guide with a similar article for single turbo kits. Many BMW enthusiasts are familiar with the S55 M3 & M4’s accomplishments. It didn’t take much time for the S55 to break into the 600whp ballpark on stock turbos. A few years later, RK Tunes broke the 1000whp…
The BMW N20 2.0L 4-cylinder is a great engine overall. They’re sporty, efficient, and fairly reliable engines. A tune and simple bolt-on mods can also push the N20 beyond 300whp. Those looking to push things to the next level will need to consider an N20 turbo upgrade. However, pushing the N20 engine too far doesn’t…
In this article, we discuss the B58 stock fueling limits and upgrades available? What are the limits on the B58 and B58TU fuel systems? What power do B58 HPFP and port injection upgrades become necessary? How do E85 mixtures tie into the fueling limits? We’ll move through this questions and then some. Additionally, we list…
The new BMW B series modular engines went in a new direction for charge air cooling. BMW changed to a top mount air-to-water intercooler design. As such, the B48 does not use a traditional FMIC. Whether or not these upgrades are worth it on the B46/B48 is up for debate. Worry not, though. In this…
Our blog has guides for most of the basic bolt-on mods for the BMW N55 engine. We always overlook exhaust upgrades, less the downpipe. There’s a reason we’ve skipped over exhausts, though. They’re pricey for minimal performance gains when you compare exhaust mods to tunes, downpipes, intercoolers, etc. However, aftermarket exhaust setups do have a…
BMW’s S65 engine in the 2008-2013 E90/E92 M3 is well-known for its amazing sounds and high-revving ability. With 414 horsepower from the NA V8 it’s no slouch, even by todays standards. However, some look to bolt-on performance mods to take the S65 M3 to the next level. In this guide, we’ll discuss a few of…
In this guide, we discuss the N55 fueling limits and upgrades available. What are the limits of the N55 fuel system? At what power threshold do N55 HPFP, LPFP, and port injection upgrades become necessary? How does E85 affect the N55 fueling limits? We’ll answer these questions and then some. Additionally, we will list a…
The BMW M54 engine first hit markets in 2000. It’s available in 2.2L, 2.5L, and 3.0L variants that offer 170-228 horsepower. It may not sound like a lot by today’s standards and it’s probably not. However, the performance is highly impressive for the early 2000s and the E46 BMW’s are pretty light. There’s no question…
A charge pipe (CP) is an excellent early mod to knock out on your BMW N54. It’s not so much for the performance benefit as it is for the peace of mind. The stock N54 CP is plastic and is prone to cracking under higher than stock boost. Chargepipe upgrades also allow the option to…
Pro Tuning Freaks (PTF) bootmod3 flash tunes are a popular option for the newer F and G chassis BMW’s. Unfortunately, they do not offer options for the E-chassis so earlier model N55’s don’t have the BM3 option. PTF BM3 offers an excellent web interface and mobile app for easy N55 tuning. Bootmod3 also comes with…
The B48 in 20i and 30i models is looking to be an excellent engine thus far. It’s reliable, efficient, and sporty. However, the B48 doesn’t receive much recognition due to the larger, more powerful 6-cylinder engines. That said, we’re likely writing this article too soon. There is still a lot of time, development, and testing…
