Modifications I have done are headers, catback, High Flow cats, 5/16 plenum spacer, high flow intake. The model of the car is a 05 G35 coupe Rev up 6spd model (stock is 298hp). Just trying to get a ball park number. Thanks for the help. Btw im talking of bhp not rwhp. I will get it tuned in the summer and will find out the whp later on.

 

318 at the crank maybe?

 

Hmmm it seems it would be more than that.

 

Stock 298hp!?!?!

 

I don't mean to be a downer but I would put you around 260 on a dyno. To break 300hp on an NA setup takes lots of technical modification and tuning on these cars.

 

Im not talking about rwhp... yes it's 298 bhp stock. Rev up models have 18 more horses than the non rev up models.

 

Oh boy.. And what the hell good is a BHP number?

 

I hope you have either an MREV2 or at least a non-revup lower intake plenum, otherwise that spacer is waste.

 

exactly^

 

It's the Z1 Vq plenum spacer. Website says it's an easy mod for 10 hp.

 

Find a dyno

 

Without the mrev2 the spacer is useless on that motor like they said. The headers can actually cause you lose tq too, so that's a problem. Tq is what you should be concerned with HP is an all but useless number when you're talking about power. It's just kind of a hint at what's going on.

 

Mrev2 is in the works.... I got over 50$ off on the spacer so i got it already. Borla headers over the restricted oem headers isnot a problem lnfao. Thanks for the opinions.

 

Stop being a ricer and guessing based on mods. Find a dyno and figure it out.

 

Yeah, bud, sorry to say you wasted yer time and money on those header, but unless you got a completely built engine, they're useless. It's been proven on many dynos.