Check out this site and scroll down to the finished header part.They have a you tube video on their process of construction.This is a Ghia build (I am into Ghia's)but the info on the headers is interesting.It won't be cheap but in my experience no customization or special fabrication comes cheap.
www.deanzrodzandracecarz.com/sidewinder

 

Well its going to the dyno again tommorrow, we will see what hp it puts down with updated intake system.

 

im excited for you super_jag.........any dyno results yet ?

 

And the numbers were....

*drumroll*

 

You may be interested in this sort of tool:
http://www.autospeed.com/cms/A_1973/article.html

(other tools, such as the one from AutoEnginuity, can also be used)

 

Bad news the reroute of the intake was a big failure. I thnk i bottlenecked the air flow which resulted on very bad dyno results. I got 256rwhp with the intake rerouted I immediately removed the intake and used the stock because I figured the car was gasping for air. So back to square one, I will go ahead and develop a carbon fiber infender intake, then plan on purchasing a tune with pc mention by jagv8, because I plan on using the dyno a lot I dont want to pay 40 everytime. I will keep you updated.

 

Wow. That is a HUGE loss in power! My 06 G35 even dynoed higher than that! Granted it is chock full of go fast parts...

Did you feel the 50+rwhp loss from your "butt dyno"? I would assume that you should have felt a difference immediately after the intake change...

 

You might also like this:
http://www.autospeed.com/cms/A_1898/article.html

the snag with the STR is that it is full of electronics and software, which will get in the way of simplistic mods!

 

Told you so

 

You know what, I can admit when I was wrong.
I was wrong, anyways I had planned on using 3 inch pipe but i only had 2.75 aluminum piping at home.

 

I felt the difference when I put the stock one back. I just used the big cone filter intead of the stock box.

 

Nice, i like to see build threads. Just an fyi though...I live close to eurotoys and have been there and spoken to the owner a few times. They do not do ecu tuning at the shop, they actually send out the ecu to someone else and they put some off the shelf tune on it.

 

Do you know who they send the tuning to? I would rather skip middle man, and maybe I can go to his shop to tune.

Progress: i have started on the intake system and will probably finish mock up Saturday. After that I will make mold and make th intake tibing out of carbon fiber.
Cosmetic: I purchased H&R lowering springs. I also have my choose down to two wheel options. Pics up soon

 

wheel have the new springs installed and rims as well, had to pull rear fenders since it was scrapping on bumps. I also removed the rust of the shock ansorbers an coded the shocks with new red paint. I also tinted the car and polished the emergency brake caliper in the rear.
Old shocks with rust

New shock with paint and spring

Spring height comparison

 

emergency brake polished

more pics to come shortly

 

After building two of these engines I would NEVER put nitrous through them!

As far as the intake goes, you are finding out the truth. The prefabbed kits do almost nothing and homemade ones are usually worse then that. You will hear claim after claim about feeling the difference which is bs. IF you are hell bent on making an intake, the first step is finding a path that avoids heat, much like you have. The second is maintaining or exceeding the pipe diameter in all areas EXCEPT the MAF sensor. This can be tricky as alot of stock intake tubes are oval. People think they are going bigger when they are actually going smaller. On top of ALL this, you have to avoid as many turns as possible, air does not bend, 90* angles in these intake kits are notorious for hurting air flow.

There is a performance way to go about improving the intake IF you want to do it right. First of all, install a vacuum gauge and do a WOT pull on the dyno. This will show the intake restriction, if any, your engine is fighting against. This will tell you if your work is even worth it. Second, with a scanner, watch the IAT. Typically the car manufactures put these air boxes in a pretty good place from the factory (remember, they don't like high IAT's either). So, the only real improvement are impratical (the kits that route the filter inches off the road) because the factory is going to take a higher IAT over the chance of water being sucked into the engine.

A major improvement on these cars is the exhaust. The entire exhaust system is pretty restrictive from the factory. That's normal on a "luxury" car because most owners will sacrifice some power for a quiet cabin.

 

Got some pics of the new wheels and car lowered





I got my smaller supercharger pulley yesterday and cant wait to swap it, I will update you guys.

 

F'n Sweet!!!

 

thanks ... work in progress

 

Just saw this...sorry. I'm pretty sure he told me, but I can't remember. Did you ever find out who it was?