I'm currently working on my 08 G37S, and came across the daytona throttle body upgrade (provided by Z1 in GA). I was wondering if there were any other viable options that can be considered other than that? Similarly, I've seen some Maxima owners swap their throttle body out for that of a Frontier.

 

You can send out a set of stockers to get ported but not sure the WHP gain is worth the $$$ been proven a bunch on times headers aren't worth the $$$ .

 

i may not have the $$, but for me, there's no replacement for quality...i was looking at the upgraded TBs, but it's 2mm larger and polished; not that great for ~$850 for a set. Just trying to see if there's any viable options OTHER than getting my OEM refinished

 

LOL man you Flip Flop all over the place about headers..
I have Proven headers are worth the money look at my Dyno 16whp gain without tune and 19whp gain with tune and 10+ in the mid-range..
I am the only one that I have seen that did a before and after dyno without tune..so saying it has been proven a bunch of times is just false!

 

had a moment of dyslexia for a min there lol. i was asking about throttle body options, NOT headers

 

I got SYNOLIMIT 63mm TBs. He takes the stock TBs and bore them out from 58 to 63mm for a fraction of the cost Z1 sells their TBs. Could send your TBs first or send them after and get a core refund

 

Jeezus....I just looked it up and nearly had a heart attack it looked so damn good.

Questions:

What upgrades are you running currently power wise?

Can you best describe the difference you felt after?

Do you have to ease into it more? Or can you still stomp it like sharkiesha?

Did you have to up the diameter on your intake? I'm currently running stillen gen II's with z1 silicone MAF deletes...

 

No issues with fit on the stillen gen 3's for you with the bigger TB's?

 

someone did a really long thread about this, he got his manifold bored, his throttle bodies, sanded where both manifolds meet. did not gain alotta power

 

I don't flip flop I'm still looking for info , yours pretty much sealed it for me that the whp they make isn't worth the 1k+ you have to spend. Your thread has before and after yes, but stock tune fully bolted VS ecutek tune fully bolted. I would have needed to see a bolted car ( like mine) with tune and then install headers and return. I'd bet your net gain would be below 10 whp, and to spend more the 1K for me is ridiculous. We all know it's a pain in the a## to test parts but it would have better to get a bolted ( minus headers) and tune run then install the headers and a retune run.

BTW your final run I only made 7 less whp and same the same wtrq as you I and I have a auto AWD( stock headers) Yes all dynos are different an the dyno I use is a "heartbreaker ". Any where else I would have made closer to 310.
Just for me it's not worn the hassle . Till some shows a bolted tuned car vs Headers and retune and make a gain worth the 1k I'll pass.
We all know how I feel about the cams for this car also:/

 

See quotes in red for answers...

 

yeah, but remember he has 4.08's which make the dyno numbers read much lower due to different load on the engine. if he had stock gearing he would be in the 330 whp range or a little higher. so your point is moot. chuckie is putting down some good power.

 

Really :/,

His 3.36 to 4.08 loss was 10WHP so if you'd add that back in( Taking the way you adding things) he's making 317 WHP. But this is all hear say, No numbers to back it, Just saying "Well with my 3.36 gears I would make X" . And 330WHP is a big Stretch.

 

330 is really not that big of a stretch, z's running the same mods are in that neighborhood with stock gearing. also, the more power he is putting out the larger the loss in hp (on the dyno) from his gears. that being said, I do agree with you that headers are an expensive mod for the gains, but you can't deny that untuned chuckie gained 16whp from just headers. on our motor, that's pretty good.

 

the power bands changes thats why the dyno number change..you would be paying about the same amount to do gears as you would headers yet gears give you 0whp they just give you better acceleration..
if i still had my 3.36 gears i would throw them in just to prove a point.

http://www.mpgenhance.com/differential.html


Power Gain & Fuel Economy

Installing higher rear end gear numbers will not technically increase your horsepower. In fact it will slightly decrease your horsepower and torque on a dyno test. However it will greatly increase your acceleration and allow your engine to operate at a higher rpm throughout your normal driving range. So you will be utilizing more of your engine’s horsepower and torque all the time. For example, typical LT1 and LS1 powered Camaros and Firebirds at the race track can reduce their quarter mile times by up to 2 or 3 tenths in the quarter mile by switching from 3.23 to 3.73 or 4.10 gears.