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BMW N54 – Cylinder Timing Corrections and Tuning for More Reliable Power

By PTF

There seems to be a lot of discussion on timing corrections on the N54 and what they mean. Are they bad? Will my engine go kaput if I have some corrections occuring? What happens when my meth isn’t flowing right and corrections happen? Etc etc etc. If you’ve ever had a chance to datalog a…Read more BMW N54 – Cylinder Timing Corrections and Tuning for More Reliable Power

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GROUP BUY: BMW COBB AccessPort (AP)

By PTF

We’ve sorted out the group buy pricing on Cobb APs finally and happy to say it is too low to advertise. There are two prices, one for the US customers and another to Canada due to shipping. I have to say I’d love to have had this price when I got my own AP back…Read more GROUP BUY: BMW COBB AccessPort (AP)

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BMW N54 – Data Logging with COBB AP – Part 1

By PTF

Data logging is an invaluable tool when it comes to maintaining reliability and checking on your modified car. It allows you to know what your car is trying to do (requested values) and what your car is actually doing (actual values). Knowing the concepts is one thing – being able to understand it and utilize…Read more BMW N54 – Data Logging with COBB AP – Part 1

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Supporting Vendors on bimmerboost.com – Intro Group Buy!

By PTF

Just wanted to let you guys know that today we’ve become sponsors on bimmerboost.com. We chose to sponsor BimmerBoost due to the wealth of information it brings to the world on the N54 scene as well many other amazing BMW FI and non-FI motors. In that light we’re organizing a Group Buy on custom COBB…Read more Supporting Vendors on bimmerboost.com – Intro Group Buy!

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COBB V402 Alpha maps, Alternative Fuels R&D, Cooling system calibration…

By PTF

Some cool new stuff going on at PTF on the Cobb AccessTuner front…We have had the awesome privilege of working with the guys at Cobb. Obviously the BMW DME gurus at Cobb are the ones doing all the heavy lifting in the DME. On our end we’re calibrating and providing feedback in the R&D lifecycle…Read more COBB V402 Alpha maps, Alternative Fuels R&D, Cooling system calibration…

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PRO TUNED: 2009 BMW 335XI – Gained +47AWHP +61AWTQ at 6500rpm!

By PTF

Hit the dyno with Andy’s 2009 BMW 335xi. Scorcher outside, 95F. On top of that the car is AWD so naturally higher drivetrain losses than RWD (10-12% RWD drivetrain losses vs. 20-22% drivetrain losses in the AWD 335xi). Bone stock, XIs make 247awhp/260awtq on this same type of dyno, in much nicer weather conditions. Dyno…Read more PRO TUNED: 2009 BMW 335XI – Gained +47AWHP +61AWTQ at 6500rpm!

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Cobb AccessTUNER Race (ATR) Tuning Tips – Requested Load vs Actual Load

By PTF

Tuning the N54 is now completely possible thanks to www.cobbtuning.com and their Cobb AP handheld. Their OTS (Off-the-Shelf) maps are a great start for your N54 powered BMW car. With the release of AccessTUNER Race you can now custom tune your car to perform like it never has before. Some other tuning platforms give you…Read more Cobb AccessTUNER Race (ATR) Tuning Tips – Requested Load vs Actual Load

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BMW N54 Cylinder Head Upgrade – Part 2

By PTF

Most recent update from the machine shop. Here are the stock N54 cylinder head numbers followed by numbers with only work in the bowl, and then additional work with larger exhaust valves. Numbers are VERY exciting. There is 35+% more flow on the intake side and 13.5% on the exhaust side. Shop is working with…Read more BMW N54 Cylinder Head Upgrade – Part 2

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