As per title.

A) I know induction kits contribute to MAF failures. It will not be oiled, it will be bracketed accordingly.

B) I have to have an induction kit - FMIC

C) I've chosen the Viper as it's enclosed and lightweight (will replace the HKS).

I'll soon be looking at 550cc injectors and TDO5 20G and the RA might get somewhere near 400bhp.

Q - Will the PX Viper be good for 400bhp?

Thanks - I hope you can help because it'll be fitted next week and there's no point if it'll proove restrictive.

Cheers

J

 

Ive often wondered myself how well an enclosed filter would work on an impreza.

 

why not fit an APS cold air kit and with 550's and a 20g turbo complete with RA gearing its quite fun i loved it on mine while the gearbox lasted

 

ive got the viper fited to my sti8, and with full de-cat and an ecutek remap it did 320brake on the rollers a few weeks ago....

 

Regards the APS, it might be an idea but I've already paid for the Viper and have sorted modified FMIC pipes to fit it.

Basically I was looking through search/Viper and somebody mentioned they weren't good for 400bhp. If they aren't, I'll cut my loses.

How did you find the set-up by the way? My Gearbox was rebuilt about 4k miles ago. Is it likely to pop?

 

See here for filter comparisson - http://www.raceweb.co.za/Articles/ai.../induction.htm

 

my gearbox lasted great with just the induction kit as im pretty kind to it. then i added an inlet pipe and aa APS cold air kit and one week later BANG but the difference in acceleration was very noticeable

 

That makes for very interesting reading, im quite glad that ive just bought an enormous K&N now

 

BTTT for some Sunday help.

Is the Viper's flow volume good for 400 bhp?

J

 

Thanks for your PM.
I have no direct experience of the Viper but from looking at it I doubt it is a 400 bhp filter. Also the K+N filter supplied with the APS cold air kit becomes a restriction around 400 bhp.
For 400 bhp you want the biggest K+N filter that will fit in the space you have available and you need to isolate the filter and intake air from the effect of the warm engine bay.
There is more to a filter than just the air flow it will permit. The ability to filter down to low microns is equally important for engine life and MAF life.
If it is a K+N oiled filter which comes pre oiled, follow the instructions carefully when you come to service it, do not over oil and it will not effect MAF life.

FYI 550cc injectors on a Classic are nearly maxed out at standard fuel pressure at 400 bhp.

 

Thanks Harvey, I appreciate it.

 

Anyone else know what the Viper is rated to?

 

BTTT

 

I've e-mailed AndyF but BTTT for one more go at a quick answer.