I have a 05 STI that I want to mod through vishnu. I am debating the 350kit (ecu, catted downpipe) and the 370kit (ECu, Catted Downpipe, 3' turbo back exhaust. I drive my car as a daily driver so I don't want a loud exhaust on the freeway. Nothing obnoxious. If you guys have ridden in cars with these kits, please let me know what you experience has been with the level of noise.

Thanks,
B

 

The Vishnu Signature exhaust is great in terms of sound. Nice and grumbly on the throttle, but doesn't get too loud and doesn't resonate much on the freeway, especially if you have a sedan.

 

I had a twin tip vishnu turbo-back and liked it, not too loud but good sound. Vishnu says that the signature series is louder though.

 

I had the signature on my WRX wagon and I have the basic TBE on my STi. I loved the signature for the pure quality of sound. The basic one sounds great too and is not too loud. Vishnu recently changed manufacturers of their basic TBE line from TaipanXP to Helix, so the sound may be completely different now.