Longtube manifolds for GranTurismo (and QPV)

[Ebenezer]

The even bigger question is how much will they cost?
Eb

 

[KebabKebab]

Yes, we need an indication of price. Headers are never a huge power gainer but can provide a good combined effect. It all depends on the price!

 

[A.S. Motorsport]

https://www.facebook.com/video.php?v=223843493190221

 

[Felonious Crud]

The even bigger question is how much will they cost?
Eb

What would you be willing to pay, Eb? It'd be interesting to see what value the forum attributes here.

 

[JJbing]

Tricky one. I love the way mine sounds, so would only be willing to pay £500-£800 depending if decent gains and it retains the exhaust note/pitch but just louder.
Would it be better than just x pipe, which is the most common mod?

 

[Ebenezer]

4.2 bog standard QP not worth it really. I can but dream. But if its tuppence ha'penny I'd have it! Sadly probably not! However what if I had a cracked manifold....
Eb

 

[A.S. Motorsport]

Tricky one. I love the way mine sounds, so would only be willing to pay £500-£800 depending if decent gains and it retains the exhaust note/pitch but just louder.
Would it be better than just x pipe, which is the most common mod?

The aim here isn't to create more sound, it's purely to improve performance especially mid-range torque.
I'll release more details later this week

 

[Gazcw]

The aim here isn't to create more sound, it's purely to improve performance especially mid-range torque.
I'll release more details later this week

As long as they don't change the sound. Unless you put sports cats in them of course.

 

[A.S. Motorsport]

As long as they don't change the sound. Unless you put sports cats in them of course.

Hence the sound videos without cats, Yes it's a bit higher and slightly more exotic sounding but totally fine, it's (a x-pipe swap is louder)
Off-course the catalyst variants wouldn't be that much louder than stock

 

[Gazcw]

Hence the sound videos without cats, Yes it's a bit higher and slightly more exotic sounding but totally fine, it's (a x-pipe swap is louder)
Off-course the catalyst variants wouldn't be that much louder than stock

Hoping you have a 200 cell planned at some point.

 

[Felonious Crud]

Exhaust sound-tuning seems to be an art form. I'd like to switch my asthmatic pig-iron manifolds with built-in 600-cell primary cats for lovely tubular manifolds, but the risk of turning my deep, quite bassy V12 into a screaming F1-wannabe is high. In fact, one well-regarded specialist advised me not to do it because the end result isn't actually a very nice sound. Now, you could of course muck about with different pipework and cat densities but you're into a ton of trial and error and expense.

In the case of these new headers, I like that the goal is to liberate some power, not to create more noise.

 

[KebabKebab]

How is the install time on these?

 

[A.S. Motorsport]

How is the install time on these?

This is something we did make some design revisions on, V2 was very very time consuming, V3 has much easier access now will take roughly 8 hours to install (heavily depending on how the manifold studs come loose)

 

[KebabKebab]

This is something we did make some design revisions on, V2 was very very time consuming, V3 has much easier access now will take roughly 8 hours to install (heavily depending on how the manifold studs come loose)

Wow! Even though you have made it easier, that may be very expensive over here!
But still it all depends on the power increase!

I mean I'm happy for you to test fit your headers on my car!

 

[A.S. Motorsport]

I mean I'm happy for you to test fit your headers on my car!

Testing is already fully underway we've got them now in longer term road test (daily driving & stress tests), and will finalize dyno testing next month

 

[Chrisb2015]

Tricky one. I love the way mine sounds, so would only be willing to pay £500-£800 depending if decent gains and it retains the exhaust note/pitch but just louder.
Would it be better than just x pipe, which is the most common mod?

I suspect you may need to add a zero onto your numbers. Quality, low volume engineering is seldom cheap.

 

[Gazcw]

Wow! Even though you have made it easier, that may be very expensive over here!
But still it all depends on the power increase!

I mean I'm happy for you to test fit your headers on my car!

Good try.....shot down in flames

 

[KebabKebab]

Good try.....shot down in flames

Gotta try!

 

[A.S. Motorsport]

Ok so we've done first batch of dyno testing on the test car, (fully remapped no catalysts at all)
I intend to do a few more confirmation runs on a different dyno so we've got as much data as possible, but so far the differences especially in torque is very noticeable and we've managed to move the torque curve down the rpm range and improve it massively.

Currently about 400+ test miles with out issues. (we've paid special attention around the 3D printed items)

Few shots of the system after testing as you can see full heat cycling done.

 

[Chrisb2015]

Ok so we've done first batch of dyno testing on the test car, (fully remapped no catalysts at all)
I intend to do a few more confirmation runs on a different dyno so we've got as much data as possible, but so far the differences especially in torque is very noticeable and we've managed to move the torque curve down the rpm range and improve it massively.

Currently about 400+ test miles with out issues. (we've paid special attention around the 3D printed items)

Few shots of the system after testing as you can see full heat cycling done.

Hi Motorsport,

Who is doing your mapping for you? Are you intending to include a remap as part of a package to get the best out of the new headers?

Thanks

Chris