I know it says they only fit the coupe, but has anyone tried them on the sedan??

 

They fit from what I know.

Not worth it for a few hp considering all the time and work it takes to install.

 

VERY worth it if you're not going FI. I had TopSpeed headers (same design as Strup), and I gained 39RWHP with tuning in conjunction to the headers/cats/exhaust/intake.MREV. They make a big difference in the mid-range and upper rev range, and totally transform the feel of the car. My car pulled hard on any NA 350z/G35 I would encounter. My suggestion, buy the TopSpeed headers for less than half the price of the Strup's, and apply the money saved to the installation.

 

are these topspeed/strup headers same design as crawford headers??? any info on crawford. i know they cost an arm n a leg but i havent been able to find any real life advice on them??? thanx in advance

 

Really?!? I had always seen poor header results from most of them.

Most of the dyno's I see for headers (except for Crawford) gain ~5-8hp. I can see how the cats, exhaust, spacer and mrev help a lot. I guess if you run all those mods together then headers can help.

But for all that money/time, just get a Vortech SC and keep the 3.33 pulley or get a Stage 2 stillen sc for safe low boost fun.

 

Crawfords are the best but do require you to move the engine a bit to install.

 

move the engine only to install right....once theyre in, everything goes back to normal fitment???

 

I did alot of the same mods and with the Unichip tuned, it was VERY noticeable. The mid range increase is very nice and the tranny seems to be made for this power level. I didn't do a dyno before all the mods but I would say that my combo added 35+ hp and probably 35+ ft/lb.

 

Yes, the best way is to drop it a little to get them on.

 

You did the right thing with the unichip. If someone is going to do enough N/A mods (intake, spacer, headers, exhaust, etc) like you or Vodka I would strongly recommend a piggyback like the unichip and a tune. That's the only real way to take advantage and get the most of these mods. The factory ecu can only go so far.

 

No doubt, but it is all on the way to FI, gotta do the FI for the real power.

 

im wondering if someone does all internals (pistons, rods, volves, rings, camshafts etc) plus bolt ons (intake, spacer, header, exhaust, plenum, pulleys, high flow cats, etc) and a piggyback or standalone will they break the 350 RWHP N/A???????

 

Probably but for the cost you might as well go FI.

 

^^^ yea i know...but im just saying, there are some people who are in some weird way anti FI....me not being one of them but hey. reliability is another issue...i know doing internals is risky but i tend ot believe its alot more reliable than 10+ lbs of boost all the time.

btw....Internals, boltons, AND FI FTW!!!

 

Yea if you built your longblock and got head work done you should be around 350whp n/a. and ready to put down over 600whp with F/I added