A ported throttle body should be good for throttle response right? I would assume if it actually flows better then you could expect some decent gains. Probably more on a FI vehicle. Il be looking forward to a review and dyno of this.

 

far less important on an FI car actually than on an NA car...but for this car, the stock TB is plenty large

 

Well, I think the throttle plate they use is lighter, so it may help...(as far as throttle response). But, I imagine if you did a PF or 350EVO TB and TS L-Spec reflash you'd notice the difference.

 

It depends how long it is until you go F/I. I say it's worth it if it's 6 months to a year, for only ~$600 for better throttle response...worth it IMO.

To answer your question about the F/I (seeing any gains I guess?)I doubt it.

 

LOL. Having driven a car with one of the PF tb's, if there is a difference in throttle respose, it is negliable. If you want throttle response, do a flywheel - it will have a dramatic affect on it

The mysterious "flap does not fully open" is not something anyone has ever proven to the best of my knowledge- and even if it is the case, it is purely a software issue and has nothing to do with the actual butterfly in the throttle body (since our cars are drive by wire).

I wonder...why are you guys so quick to drop money on stuff that provides the least benefit possible? I am not saying the TB is not a solid mod for a car set up to have it (and that includes alot more than just an ecu flash - lots of plenum work, cams, etc would be in order). Remember, just because it is sold, does not mean it is worth buying...regardless of the price

 

Actually it has been tested, there was a thread in the F/I section, someone used their zeitronix setup to test it. Right, it's just the ECU, not the actual TB, I was just stating it might make a difference in throttle response, having the TS reflash and the TB.

Because it is cheap I imagine. $300 for a throttle body or $800-1200 for an exhaust that only gains 4-8hp...?

Heck, if we want to talk about the best bang for you buck, it would be a supercharger or single turbo kit (we're not talking reliability though, even though i'd like to prove that the stock rods can take a lot more than 400rwhp, you would be semi-reliable at 340-380rwhp all things equal (good tuner, etc.)).

The prices...IMO...are very screwed up. $1200+ for an HKS Ti exhaust. The tips are Ti...maybe the mufflers too, not sure,but the piping is not Ti, that is ridiculous IMO, that's a 1/4 of the cost of a single turbo kit or supercharger that would gain you at least 80 more whp, something an exhaust isn't going to do, it isn't even going to gain you 1/4 of that, but it IS 1/4 of the cost.

 

I hear you on the pricing, but remember, not all of us want a 600 HP car. For me personally, I'd rather spend the money to go NA vs FI, as this is NOT a car I want to build a motor for at some point. I've turbo'd many of my non turbo cars over the years and it's just not something I had any desire to do with my Z...anyway, we are way off topic now

 

I am with you guys on this, maybe it helps maybe it doesn't I am pretty sure on a stock Z there is negligable difference at best. I think with an upgraded intake, plenum (atleast upper, probably lower as well) and even some upgraded cams... then the ECU reflashed to allow 7k'ish RPMs or so (then you may need stronger valve springs too) only after all this would I think the need for some additional throttle body bore is "possible". Even having said that, a minimum of TP/HFcats and Y-pipe is also needed to get the full increased flow effect. Then, maybe then, a few HP above 6000 RPM's or higher.

I think the mod is worthwhile, on an upgraded NA 350z/g35. Especially if flow is increased with polishing and/or the flap is lighter.