ZHP NA Project - More Power

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Originally Posted by slater

has that worked for anyone?

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According to the amazon reviews it has worked, i will confirm that at the end of the month :)

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Originally Posted by BerDz3nA

According to the amazon reviews it has worked, i will confirm that at the end of the month :)

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it worked for E46 owners?

just curious, because i've never heard of them working before. ;) would love it if they did actually work!

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Originally Posted by slater

it worked for E46 owners?

just curious, because i've never heard of them working before. ;) would love it if they did actually work!

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Attachment 32920

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Originally Posted by BerDz3nA

Attachment 32920

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Cool! I hope they work for you too, that would be a great data point.


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I've heard of at least one other person getting it to work but it was a struggle...

I can confirm they work. I installed a pair of 90deg angled extenders on my ZHP with catless headers (in the rear-most bungs). It is a bit of a struggle to get them to fit, lots of initial loose fitment until you get the angles just right since the space and clearance is tight, and after a few test fits, you'll be able to figure out what angles the extenders need to point. Just remember that these headers are nothing without a tune. I went with Eurocharged for my tune, and have since added a big bore throttle body, and the response is much, much better compared to stock. I have a set of underdrive pulleys waiting to top it off, and that should be it for NA bolt ons.

When it comes to smog time (CA), I revert my car to the OEM tune and cycle the car on the freeway up to steady 55mph in order to get all the monitors ready for smog. Even with the tune's ability to code out the CEL, the monitors will be in the 'not ready' state, hence the need to go back to OEM to play nice with the smog computers. Going back and forth from OEM tune to Eurocharged, the car responds much differently, such a dog going back to the OEM tune.

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Originally Posted by autom3otives

I can confirm they work. I installed a pair of 90deg angled extenders on my ZHP with catless headers (in the rear-most bungs). It is a bit of a struggle to get them to fit, lots of initial loose fitment until you get the angles just right since the space and clearance is tight, and after a few test fits, you'll be able to figure out what angles the extenders need to point. Just remember that these headers are nothing without a tune. I went with Eurocharged for my tune, and have since added a big bore throttle body, and the response is much, much better compared to stock. I have a set of underdrive pulleys waiting to top it off, and that should be it for NA bolt ons.

When it comes to smog time (CA), I revert my car to the OEM tune and cycle the car on the freeway up to steady 55mph in order to get all the monitors ready for smog. Even with the tune's ability to code out the CEL, the monitors will be in the 'not ready' state, hence the need to go back to OEM to play nice with the smog computers. Going back and forth from OEM tune to Eurocharged, the car responds much differently, such a dog going back to the OEM tune.

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What throttle body have you installed and how many MM is the diameter ? Have you dynoed the results ?
Also i am planning on installing the underdrive pullies, what brand have you got istalled and what are the results ? feelings ?

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Originally Posted by BerDz3nA

What throttle body have you installed and how many MM is the diameter ? Have you dynoed the results ?
Also i am planning on installing the underdrive pullies, what brand have you got istalled and what are the results ? feelings ?

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I went with this company since they are local to me:
http://westcoastriots.com/shop/autom...n-13547502445/

No dyno results, but given that all the mods put together complement each other, it makes the car just a bit more fun to drive. It's all subjective anyways, I have an S54 in my other car so my M54 ZHP won't feel as frantic as the S54 but it's fine for daily driving.

I don't have pulleys installed yet. Will probably go with Turner Motorsport or Rogue, whatever big name is available and will be on sale during the holiday/clearance season, highly doubt there is a noticeable difference between the big names.

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Originally Posted by autom3otives

I went with this company since they are local to me:
http://westcoastriots.com/shop/autom...n-13547502445/

No dyno results, but given that all the mods put together complement each other, it makes the car just a bit more fun to drive. It's all subjective anyways, I have an S54 in my other car so my M54 ZHP won't feel as frantic as the S54 but it's fine for daily driving.

I don't have pulleys installed yet. Will probably go with Turner Motorsport or Rogue, whatever big name is available and will be on sale during the holiday/clearance season, highly doubt there is a noticeable difference between the big names.

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350$ for approximately 5WHP gain is too expensive, thank you for the info.
Does rogue have 3 set pullies

Go with Rogue pulleys. All other vendors sell their own pulleys, which are a replica of the Rogue pulleys. Rogue are the original and they usually have sales on them. Best mod I've done to my car in terms of power and responsiveness.

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