SC400 VVT-i BFI Mod does give you more power!

[scfou]

I completed my BFI mod last week and finally got a chance to drive the car today. Let me tell you, you definitely feel the power when you punch it on the freeway. It's not something extra that only a dyno machine can you see the increase, but there's definitely a lot more torque and high end power. Now all together I have custom modified 2.25" exhaust piping, removal of all resonators and I think 1 cat if there is 3 altogether, and I kept the factory Lexus mufflers so that it's quiet when I drive normally. Now in addition to the BFI mod, my car sounds like there's a beast under the hood. It sounds like a V8 mustang on flowmasters. I wouldn't be surprised if my car now has upwards of 320hp from 290hp stock.

 

[O1GS43O]

BFI mod ?

 

[Thermactor]

It's when someone cuts a big hole in their stock intake box and then runs a dryer hose to the outside world.

 

[Zuffen]

The sound will fool you into thinking the engine has picked up gobs of power when in fact each mod you've done may be good for a couple of HP.

It would be interesting to see a dyno chart on it.

 

[Skatony]

...really? you really think you picked up +10 hp?? i agree, put some cotton in your ears n try a freeway pull again....

 

[Thermactor]

It's good for 10HHP (honda horsepower)

 

[Zuffen]

Ahh. Shetland Ponies!

 

[XR8tt]

Ahh. Shetland Ponies!

They're tough little buggers... Can be cranky too !!!
More like sea horses .. Lol...
We call it CAI down here.. Cold Air Induction ...

 

[XR8tt]

Ahaha .... Your kidding ....

 

[spdrcr771]

man if you got 20-30 hp from that id be pissed of. i spent 400 on my SRT intake for gs400, & i dont see how cutting holes in the stock airbox w/a stock replacment k&n would flow more that mine.

 

[stevechumo]

The only real power gain is the air filter must be located behind the fog light. That's where the air is real cold.

 

[Lextreme II]

I think SS headers proven to gain about 25 rwhp and our Stage II cams got 31 rwhp. BFI might give you some additional but not by much.

 

[spf_lexus]

If you don't mind changing your oil every 3k, ditch the filter alltogether and run a fine metal screen. That would open up some more CFM over the K&N. I ran filterless for a year. It's not as scary as it sounds, just invest in a high quality oil filter and regularly check fluid condition. VVT motors respond better to smaller changes in flow than non VVT.