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Old Apr 21, 2009 | 08:39 PM
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Question about the power loss

I cannot seem to find any information on why Inifniti claims 330 HP and 270 TQ to the crank but on multiple dynos I have seen anywhere from 254 to 280 wHP and well under 230 ft/TQ Can someone explain this. It just does not seem like much of an improvement from the G35. I have seen multiple RSX' with full bolt ons walk all over a stock G35 and stock 350z not the 335i so much but if the G37 is suppost to be the 335i's competitor the dyno numbers sure are not matching up at all.
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Old Apr 21, 2009 | 08:47 PM
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With an auto G37 you take 23% off the 330 HP and with a 6MT you take off 17% off the 330 HP, to get the correct WHP.
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Old Apr 21, 2009 | 08:50 PM
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Originally Posted by BPASoCal
I cannot seem to find any information on why Inifniti claims 330 HP and 270 TQ to the crank but on multiple dynos I have seen anywhere from 254 to 280 wHP and well under 230 ft/TQ Can someone explain this.
You just answered your own question there buddy
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Old Apr 21, 2009 | 08:59 PM
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my question is why is it that say for example the 2006 RSX type s claims 201 at crank but dynos 170 to the wheels. BMW 335i claims 300 HP and TQ and puts out 280 to the wheels in both those categories. So why is that Inifniti takes such a huge loss... I mean even with full bolt ons + tune (from what i have seen on this site) the dyno doesnt even improve over 40 wHP and barely makes 30. Is this something that may be fixed in a future model or something that is being looked at? Or am I just overlooking the issue here.
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Old Apr 21, 2009 | 09:04 PM
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Originally Posted by G37Sam
You just answered your own question there buddy
lol I understand the whole power loss thing. I just dont understand why it is so much. I have been reading posts on this site for quite a while and I tohught I read a post that explained it but I guess not. Im just am about ready to get rid of my rsx for the G I just wondered if someone could explain it.
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Old Apr 21, 2009 | 09:09 PM
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ok let's do this one by one lol

Dyno's are used to tell us more about gains rather than exact figure to the wheel.. Different dynos give different number which explains the variation in stock numbers

Different trannies have different losses. BMW's are known to have more efficient (better designed) gear boxes which might explain why they have less losses

I have come to believe (after spending loads of $$$) that the G37 is nicely tuned from the dealer and there's so litte you could squeeze out of its engine with NA mods. This isn't a vette lol once you go FI though, that's a different story
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Old Apr 21, 2009 | 09:19 PM
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Originally Posted by G37Sam
This isn't a vette lol once you go FI though, that's a different story
Now you tell me...... no wonder the guys at the Chevy dealer gave me weird looks when I took the coupe in for the 15k service
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Old Apr 21, 2009 | 09:34 PM
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Originally Posted by BPASoCal
I cannot seem to find any information on why Inifniti claims 330 HP and 270 TQ to the crank but on multiple dynos I have seen anywhere from 254 to 280 wHP and well under 230 ft/TQ Can someone explain this. It just does not seem like much of an improvement from the G35. I have seen multiple RSX' with full bolt ons walk all over a stock G35 and stock 350z not the 335i so much but if the G37 is suppost to be the 335i's competitor the dyno numbers sure are not matching up at all.


Keep in mind that the RSX weighs around 600 lbs less than the G coupe, and that N/A mods respond relatively quite well on the K20A2/Z1 engines.
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Old Apr 21, 2009 | 09:35 PM
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Originally Posted by BPASoCal
lol I understand the whole power loss thing. I just dont understand why it is so much. I have been reading posts on this site for quite a while and I tohught I read a post that explained it but I guess not. Im just am about ready to get rid of my rsx for the G I just wondered if someone could explain it.


It's not that the G loses so much power but rather because BMW tends to underrate their factory power output.


Do you know of the SRT-4? When it came out, the factory ratings were around 230 crank horsepower. It was not uncommon to find SRT-4s dynoing at 240 whp. Talk about underrated from the get go.
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Old Apr 21, 2009 | 09:39 PM
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Yeah I just figured it would be more I guess. It just bugs me to see dumb hondas with $5k into them walking all over these sexy cars all day. But this is commin from someone who has been doin the walkin rather than the guy driving the G37 thinking to himself "why am I going to race this little POS honda, Im driving a $45,000 panty dropper" lol
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Old Apr 21, 2009 | 09:44 PM
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Originally Posted by SilverRSXJezus
It's not that the G loses so much power but rather because BMW tends to underrate their factory power output.


Do you know of the SRT-4? When it came out, the factory ratings were around 230 crank horsepower. It was not uncommon to find SRT-4s dynoing at 240 whp. Talk about underrated from the get go.
yes... clubrsx.com the SRT4 and Cobalt SS are famous... in fact... it has been rumored that no car can beat them! lol they are actually very fast for the price they cost. But I want everyone to know I am not bashing this car at all I just wondered if there was a reason. I like this car a lot and I have been doin a lot of reading on it. So far no issues which means lots of potential hopefully. I cant really make an opinion about the car as I do not own one.
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Old Apr 21, 2009 | 10:18 PM
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#s are just #s. my car still looks better. the end.
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Old Apr 21, 2009 | 10:26 PM
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Originally Posted by w0ady
#s are just #s. My car still looks better. The end.
+100000000000000000
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Old Apr 21, 2009 | 11:05 PM
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Originally Posted by SilverRSXJezus
It's not that the G loses so much power but rather because BMW tends to underrate their factory power output.


Do you know of the SRT-4? When it came out, the factory ratings were around 230 crank horsepower. It was not uncommon to find SRT-4s dynoing at 240 whp. Talk about underrated from the get go.
That's because for a while Dodge was rating their horsepower to the actual wheel, not crank. When the neon srt4 came out it was 215WHP. Now Dodge is rating their cars to the crank since the caliber came out. A lot of people don't understand the difference between crank and wheel, so they started going with the higher numbers to benefit their sales.
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Old Apr 23, 2009 | 08:28 AM
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I didn't buy my G to race Honda's. I bought it for the amazing looks inside and out, the luxury upgrades inside and out and yes, the 330HP engine that is plenty fast for me. I just love this car. It really is the best looking car out there today that costs under a $100,000. Definitely the best bang for your buck too. I have owned some pretty nice cars over the years, 2000 Corvette, 2002 Lexus GS400, 2004 Dodge Viper, 2005 BMW M3 Convertible, 2007 Mercedes Benz SL500 and I have to say that the G37s is one of my favorites. This might sound crazy to some of you but I like the G 10 x's more than my SL500. The SL500 is the most overpriced piece of **** on the road today. I dislike it the most out of all the cars i've had. I will never buy another Mercedes. I think I'm rambling now. Sorry.

Last edited by TimsG37s; Apr 23, 2009 at 08:39 AM.
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