Gen V vs. Gen III

[Zeik75]

What exactly is the difference in the snout, housing, rotors? I know the series 3 used the drive by wire throttle body, but is that the only difference?

I ask because I have 3 M90's but one was a spare and i'm not sure what engine it came off of. It does look a bit different though, it has a blue steel kind of paint on the whole housing and snout. Would this be a Gen V? I was told It was going to go into a 2003 GP if that helps.

[yourgrandma]

Easiest giveaway is probably the lack of a threaded hole on top of the gen v. Everything is different between the two, but thqts the easies giveaway off thebtop of my head.

[bobtaz13]

Posting photo's of each would be just as easy

[harofreak00]

GenIII


GenV

[Zeik75]

I'll have to check when I get home i just remember glancing at it in the dark when i went to get something from the shed the other night and somethin looked different.

[myfirstbonnie]

They both do the same thing, the Gen V does it more efficiently.

[nos4blood70]

I remember reading somewhere that even a ported Gen III won't touch a Gen V.

[MattStrike]

What about a ported Gen III with new rotors that have the gen 5 coating ?

[Backhoe]

What about a ported Gen III with new rotors that have the gen 5 coating ?

I think that makes it a GenV to me, I thought it was the coating.

[olblueeyesbonne]

75mm vs 65-67mm inlet
outlets

These two differences make up a big part in the superior efficiency of the Gen V over Gen III.
Even a fully ported Gen III doesn't match the capabilities of a stock Gen V.

[FasGP]

Into perspective, a stock Gen V was 20hp more than a stock Gen III car. Other than the drive by wire, and factory U bend delete, everything else was the same. Typically, stepping down a Gen V to a 3.4 pulley was like running a 3.2 pulley on a Gen III. Its all about improved design, inlet/outlet sizes, and efficiency.

[yourgrandma]

Outlet is way different, inlet is bigger and smoother,also the coating. Quite a lot is different.