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Technical Information Blog Posts

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Classic with a modern touch: E30 325ix, Metric Mechanic M20 3200 Sport/Rally engine, & MegaSquirt MSPNP Gen2

Published: 05-21-21 12:00:00

Technical Information

We had the pleasure of tuning this beautiful 1988 E30 325ix. Initially, it came in running a stock ECU with Miller W.A.R. hardware and tune, however the performance and drivability of the car was not up to par for the owner. This was unacceptable, because we know that these M20 motors are capable of a surprising level of performance for their age and design. To make the deal even sweeter, this car is equipped with a 3200cc Rally/Sport motor built by Metric Mechanic!After being thoroughly re-engi...


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S54 Turner Motorsport Airbox On The Dyno!

Published: 05-14-21 12:00:00

Technical Information

The S54B32 engine from the E46 M3 has long been savored and relished by enthusiasts for its ability to thrive and breathe at high RPM's, as well as unleash usable torque across an outstanding RPM range. The key contributors to this performance are:Infinitely variable double VANOS with over 2x the range of the M/S5x design!Individual throttle bodies with 3x the total cross sectional area over M/S5x!Impressive cylinder head port design and mechanical strength!Its no surprise that there is muc...


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750whp N54 Sleeper 335i

Published: 04-26-21 18:00:00

Technical Information

The BMW 335i has been an increasingly popular platform for enthusiasts, with its creature comforts, daily drivability, and growing aftermarket support. It would be wise not to underestimate any N54 powered craft, because even lightly modified specimens are capable of unleashing over 400ft-lb with any provocation.Amongst the herd, we are occasionally confronted by an N54 that is so powerful, it makes you wonder why it isn't propelling an aircraft through the atmosphere. There have been plenty of ...


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350Whp N52 and how we got there!

Published: 01-12-21 14:00:00

Technical Information

Recently, we had a 2007 328i dropped off, featuring a centrifugal supercharger setup. After coordinating with the owner, we came up with a plan to spice things up a bit for this non-M underdog. A bit of back ground on the car:ESS supercharged 5.5psi3-stage IntakeF30 Sport BBKM3 brake boosterKoni nonadjustable struts Modified Akrapovic exhaustWe took the car and immediately baselined it. The mighty N52 managed 271 Whp and 237 wtq. A relatively respectable number on paper considerin...


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What is the "Supercase" Diff and Why is it a good choice?

Published: 10-14-20 19:00:00

Technical Information

The super 8.8 is the latest advancement of the classic 8.8" differential from ford. It was released on the S550, 2015+ mustang. The original design was released in the 1980's as a solid axle and revised over the years with the same generic setup evolving into the popular 8.8-IRS in the late 1990's. While the late 90's 8.8-irs is a popular (easier) swap it is becoming more difficult to find. More importantly the latest revision is significantly stronger. The super case diff was initia...


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What is AFR and what should my AFR be?

Published: 11-10-20 08:00:00

Technical Information

Internal combustion engines use fuel and air (oxygen) to produce energy through combustion. To optimize the combustion process, certain quantities of fuel and air need to be supplied in the combustion chamber.Air-Fuel ratio or AFR is the ratio between the mass of air and mass fuel used by the engine when running. We measure this with an exhaust probe called an O2 sensor. This sensor measures free oxygen in the exhaust pipe and we can back solve to the AFR ratio which we are running.The sto...


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