Quote:
Originally Posted by TPrelude-370z
To Birdman quoted below, again, all love here, just a friendly response.
"The only way a 135i is effective is when you have invested as much as you would to TT a 370z. At that point yeah the 135i hits 390whp and 450tq, but a TT 370z usually his 550whp 475tq easy without much else besides the TT kit and tuning. A bunch of supporting mods and you are able to easily push 800whp 750tq
So in hindsight you were better off investing that money in a 370z and making some real power. Turbo'd 4 cylinders can only make so much power and go so fast. Twin Turbo'd VVEL VQ37HR's can make some real power and blow by the little murdered out 135i"
The 135i is a 6 cylinder, not a 4 and stock hp numbers are under rated if you check out dozens of dyno sheets. It consistently pulls 280hp and 280tq to the wheels on varying dyno's. The stock Z pulls roughly 260-275whp and very low tq numbers 230tq on a good day. I'm not going to post dyno's, but these are consistent numbers. With that said, the two cars with similar stock hp ratings, but the Z is lacking significantly in tq, by 50wtq. That is a huge difference from stock. We all know a tune and breather mods for a turbo car destroys the bang for your buck on a Z. Full bolt ons and a tune you are looking at 315-330whp and 250-260wtq for the Z. The bmw reaches 350whp and 400tq with just a plug and play jb4 until that cost 530$. Add the same bolt on's that you would put on the Z and you are closer to 400whp and 450wtq. The cost for the bolt on's is relative to the cost for Z bolt ons. There are dozens of dyno graphs for both cars to prove my case. Spending another 8k on top of that for a Z to match those numbers is a huge price point difference.
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It's all good, I was coming from more of a boosted to boosted comparison not the N/A Z with and without bolt ons vrs the 135i with stock turbo and with and without bolt ons.
I completely understand the N/A compared to the Turbo'd 135i. Of course it will pull more power with a couple bolts ons and a tune than the Z due to it already being turbo'd. With the 135i being turbo'd, bolt-ons and tunes will be more effective than to an N/A. That is a reason why with bolt-ons and a tune the Z will push 320whp 270tq and the 135i will push 360whp 400tq with the same.
If you were to compare straight power to power while boosted:
135I twin turbo with tune etc.: pushes 420whp and 450rwtq when running 20lbs of boost. I could see this engine fully dressed/rebuilt and push 500whp 550rwtq MAXXX... The lack of the .7L worth of an engine and already being closed to max with power after a few bolt ons and an updated tune is kind of upsetting to me atleast. It doesn't leave room to work with for real power.
You would have to drop a bigger engine but then it would make the car too heavy in the front.
370z twin turbo with tune etc: pushes anywhere from 550whp 500rwtq up to 900whp 850rwtq. Depends on what TT kit with add ons and what other mods are done. I know Bullitt who is selling his GTM Stage 6+ TT kit, I believe he pushed 1000whp on a 4.5L stroker. I believe Carbon Z is making a TT 4.0L stroker to push 1000whp+. From what I talked to him about his engine can withstand up to 1400whp, but his fuel system and only has 1200CCs to work with making his engine safe to race with at about 1000whp.
You could put as much money as you do into the Z into the 135i and the 135i would never catch up to the Z.
I guess you are looking at whether or not you're wanting to build a completely custom car for you, or being limited to only Forced Induction without doing a complete engine swap.
They are two different vehicles.
The 135i you can get some good power easily and cheap compared to the Z. The 370z will give you a HELLL of a lot more power over time if truly investing into a custom vehicle.
But for power in a Forced Induction state, the 370z will be more expensive, BUT WILL WIN.
My
Yeah it costs more for the 370z to have twice as much power as the 135i but the bang for your buck doesn't start right away like with the 135i.
370z mods are out of pocket completely and are dressing a stock N/A engine for boost.
Unless you go through bulletproof lol... they finance parts now lol