Stages of the E55.
I see Stage 2 and Stage 3 and I have even seen Stage 5 E55.. What exactly are the differences between the stages? Thanks.
Stage 1- Pulley & Tune
Stage 2- Pulley, Tune, Headers & Heat Exchanger
Stage 3- Pulley, Headers, Tune, Heat Exchanger, 80 MM Throtle Body
Stage 4- Pulley, Headers, Tune, Heat Exchanger, 80 MM Throtle Body, Cams (well know for the famous Kleeman K4)
Stage 5- Pulley, Headers, Tune, Heat Exchanger, 80MM Throtle Body, Cams, Intake mods (Used by RennTech, they do CF Airbox and no Cams)
These days....they have variations of these mods by either putting long tube headers, 82Mm throtle body, meth injection, cold air intakes, Bigger Pulley, etc....but the core items are those. If I missed anything someone please chime in.
Last edited by V12Godspeed; May 20, 2009 at 02:07 PM.
Has anyone figured out how to wire up a full stand alone EMS on these cars? Port/polish heads? Injectors? I'm also interested to hear at what level this blower is known to tap out at.
Don't mean to hijack or anything.
Has anyone figured out how to wire up a full stand alone EMS on these cars? Port/polish heads? Injectors? I'm also interested to hear at what level this blower is known to tap out at.
Don't mean to hijack or anything.

From my understanding a 180ish mm pulley is the biggest you can physically put on the motor. The blower is good for now, it's more about keeping the charge temps cooler.
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From my understanding a 180ish mm pulley is the biggest you can physically put on the motor. The blower is good for now, it's more about keeping the charge temps cooler.
So the 180mm pulley is the largest pulley you can run and the blower still isn't blowing hot air? I'm interested to see how much that would net with all the aforementioned mods.
As far as exhaust, I would think long tubes, cutting out the mufflers and resonators (or replacing them with 3" straight-thru pieces) would be as about as crazy as you could go, but I'm not even sure the overall piping diameter it runs from the factory.
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I would venture to say most modded cars out there are a 3 of one form or another with ECU/Pulley, Headers, then cooling or TB for 3.
I would venture to say most modded cars out there are a 3 of one form or another with ECU/Pulley, Headers, then cooling or TB for 3.





