I owned an 01 SE a few years ago and I just recently traded in an 05 G6 for a 2002 SSEI, so I'm a bonne owner once more. I've already added a 180 degree thermostat, gutted the airbox and have a K&N panel filter in it. I've heard that Thrasher makes an intake for the Bonneville now. If I buy the Thrasher, will I notice much of an improvement over the current modded intake box? I also plan on adding a smaller pulley to the M90 in the future.

I don't believe so other than the argument that the intake hole behind the headlight could be bigger. You will get feedback that you can improve on this if you go to a fender well intake but I am not a fan of putting my filter somewhere that close to kicked up road spray, salt debris, etc.

I gutted my airbox as well and noticed a marked improvment and I am perfectly happy with it.

..or you could make a simple and effective box like I have.

the thrasher is a good option but the best is the FWI.....

and in the 00+ the filter is totally protected by the elements

Agreed

I have a Thrasher box on my GP, and I like it. Very noticable gain over the stock airbox. It'* expensive though.

Thanks for all the replies. I'll probably hold off on the Thrasher. I had the Injen intake on my G6 and didn't notice any gain at all.

WOW that is alot of piping......

you will want to upgrade to the FWI on your Bonne......it will have a good gain with the smaller pulley that your going to add....BTW what sizem are you going with....3.4, 3.5 i assume

Just a 3.5. I'm not going to go over board with mods. I just want to make the car a tad quicker.

ya that is a good choice, you will not have a problem with the KR