279whp with just intake / exh on The Roadster
02-10-2009, 12:15 PM
#162
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Once production is moving ahead with the DE/Revup and they are selling well, we can look into producing HR headers.
As soon as we have some production sets finished and sitting around I will bring an HR in and start making the modifications needed to make them fit, then produce a set specifically designed for that engine and test them back to back. I know the HR has had substantial improvements to the exhaust manifold design, but am confident we will still see 25+ whp gains.
As soon as we have some production sets finished and sitting around I will bring an HR in and start making the modifications needed to make them fit, then produce a set specifically designed for that engine and test them back to back. I know the HR has had substantial improvements to the exhaust manifold design, but am confident we will still see 25+ whp gains.
is there an eta yet on these going into production?
02-10-2009, 03:37 PM
#163
I'm currently sourcing material and collectors for a more affordable price, if things work out according to plan they should be in mass production by the end of the spring for DEs and Revups, and should also fit G35 coupes (not sure about sedans?)
HR's I would hope to have ready by the end of fall or start of '10.
HR's I would hope to have ready by the end of fall or start of '10.
02-10-2009, 05:48 PM
#165
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I'm currently sourcing material and collectors for a more affordable price, if things work out according to plan they should be in mass production by the end of the spring for DEs and Revups, and should also fit G35 coupes (not sure about sedans?)
HR's I would hope to have ready by the end of fall or start of '10.
HR's I would hope to have ready by the end of fall or start of '10.
02-10-2009, 05:59 PM
#166
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so these headers will kinda be like test pipes right in terms of smog?
theres no way to pass the smog tests unless you maybe pay off the shop? haha
but yeah, good luck with the production
theres no way to pass the smog tests unless you maybe pay off the shop? haha
but yeah, good luck with the production
02-11-2009, 06:38 AM
#167
I'm wondering if those electronic o2 sims work for the newer wideband equiped Z's...
02-11-2009, 07:24 AM
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Obviously these are made for tracking only. Is their any chance that you guys may have a streetable version of this in the future? Sorry if this is a noob question in anyway.
02-12-2009, 05:03 PM
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It must be that the HP and TQ graphs lose their linear relationship to each other once you skew one of the graphs, so it appears the higher the TQ is, the earlier they will cross (im guessing until they get infinetly close to 5252)
Which makes sense if you think about it, because the higher the TQ is, the smaller the 80ft lb difference between the graphs is, when looked at as a percentage.
If we were to plot 700 ft lbs of TQ in a straight line and calculated for HP, and plotted it on this graph, I am willing to be the crossover would be much closer to 5252rpm.
I try to keep my graphs always scaled the same for TQ and HP, but that one must have slipped by me! It prevents people from hastilly jumping all over us and assuming we are shady, thank you for correcting yourself though yardee!
Which makes sense if you think about it, because the higher the TQ is, the smaller the 80ft lb difference between the graphs is, when looked at as a percentage.
If we were to plot 700 ft lbs of TQ in a straight line and calculated for HP, and plotted it on this graph, I am willing to be the crossover would be much closer to 5252rpm.
I try to keep my graphs always scaled the same for TQ and HP, but that one must have slipped by me! It prevents people from hastilly jumping all over us and assuming we are shady, thank you for correcting yourself though yardee!
02-25-2009, 08:32 PM
#175
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Well i was wondering sense people be will be buying these headers for mostly streets. I was wondering if there could be resonators put in the design for street use if the people wanted it? Adding to that i have a couple of questions. 1. will it hinder performance from the use of resonators( i think it wont hurt it more than 3hp). 2. will it hinder that great exotic sound?? 3. would it be able to bolt up to any cat back?( i think you may of already answered this but just checking)
02-26-2009, 07:13 AM
#176
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Here's a link to another dyno where the hp and tq scales are different, and guess what, hp and tq doesn't intersect at 5252, SO STOP CRYING ABOUT IT. i swear its like dealing with kids on here, any valid explanation is always ignored and the slightest doubt is blown up like its the most important issue on the planet
here's the link:
https://my350z.com/forum/vq37hvr/418...4-whp-sae.html
here's the link:
https://my350z.com/forum/vq37hvr/418...4-whp-sae.html
03-10-2009, 05:36 AM
#179
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I'm currently sourcing material and collectors for a more affordable price, if things work out according to plan they should be in mass production by the end of the spring for DEs and Revups, and should also fit G35 coupes (not sure about sedans?)
HR's I would hope to have ready by the end of fall or start of '10.
HR's I would hope to have ready by the end of fall or start of '10.
update ^
03-10-2009, 06:45 PM
#180
Hey Guys,
Really sorry there haven't been any new and exciting updates. I've been in talks with a few suppliers and manufacturers, and its amazing how slow guys are to get things done at this level. It's almost no wonder why our economy is slowing down, no one seems to want to work anymore these days!
Anyhow, our racecar is coming along well and we'll be out testing soon, so you guys will soon be able to enjoy the sound in more than just a free revving and dyno pull envrionment.
We've got a few headers being produced now by hand in our shop for a few guys, but still no mass production (making them affordable) solutions just yet. So frustrating!
Hang in there guys, it will be worth it.
Really sorry there haven't been any new and exciting updates. I've been in talks with a few suppliers and manufacturers, and its amazing how slow guys are to get things done at this level. It's almost no wonder why our economy is slowing down, no one seems to want to work anymore these days!
Anyhow, our racecar is coming along well and we'll be out testing soon, so you guys will soon be able to enjoy the sound in more than just a free revving and dyno pull envrionment.
We've got a few headers being produced now by hand in our shop for a few guys, but still no mass production (making them affordable) solutions just yet. So frustrating!
Hang in there guys, it will be worth it.