The dyno is called a Maha (maha-usa.com) and yes, I was running 100 octane on the baseline and nitrous runs.

 

This is impressive, great work man! How much have you spent and how much of an increase in hp have you got for that amount (ie. $1k for 5hp)?

 

Do you think running a 75 shot of nitrious would be safe for my 545i currently has 86xxx or would u have to upgrade any engine internals

 

Yes, I think a 75hp shot on your 545i should be more than safe. No need to upgrade internals... Just make sure you always run 93 octane (minimum) fuel if you are spraying.

 

Awesome install blaze129,

Its a clean and well integrated install

I too have a 545i, being In Adelaide AUS however makes getting a BMW remapped pretty difficult from a reputable tuner. Which raises my question, did you have to get the car ECU programmed for the extra power?

If i were to do an install like this, I too would put all of those fail safes in play, did Nitrous Express install and interface these or are they seperate sensors?

Cheers,

Matt

 

Thanks for the positive feedback! I spent several months designing the system on paper before performing the actual install.

As far as the ECU needing to be programed, no its not necessary... The cars onboard computer and wide-band o2 sensors automatically compensate for the nitrous and additional fuel by retarding timing, adjusting fuel curves, etc.)

Most of the safety devices in my nitrous system are from Nitrous Express, but there were a few things I got from other manufactures.

Here's a breakdown on where things came from:

Duel/Redundant Nitrous Solenoids - Nitrous Express
Fuel Pressure Safety Switch - Nitrous Express
Air/Fuel Ratio Safety Switch - DynoTune (LC-1) *may be discontinued. They have an LC-2 now. Haven't tested that one yet.
Electronic Wide Open Throttle/RPM Window Switch - NOS (part#741-15982)
Manual Nitrous “Engage” Button - Custom circuit I had built to interface with the shifters factory buttons.
Cooler Spark Plugs - NGK

Well, I hope that helps!

 

POst up some videos!

 

i am the kind of guy that likes to keep things as stock as possible. as they were intended or designed to function.


but i must say...I WANT TO DO THIS!. very clean setup as well.

respect for you man.

 

Nice ride and a really clean job but it looks like a lot of expensive work.


It's so much easier to get that power out of the 535 though.
Dyno'd my 535 last summer and it made 380rwhp and 423 rwtq with a tune and 5 gallons E85.

 

$2k isn't that expensive considering the car. Also, there's always the joy and thrill of not taking the well beaten path.