I just installed my insert from zzp and just thought I'd tell you guys about it.
Well, first off, the instructions are really good. I have no experience and I had everything disassembled in about a half hour.
But I ran into a little obstacle with the alternator. I'm guessing the GPs have smaller ones or something but it was a struggle to fit the intake insert and upper intake manifold underneath the alternator. I actually had to shave some of the corner off the insert and the upper intake to make it fit. (I was careful enough to make sure the mating surfaces were untouched)
After this little obstacle it was smooth sailing. I reassembled everything and waited a little over four hours as directed for the sealant to cure.
Once I started it up it idled reaal high then settled down and was still smooth. I took it out for a test drive and the power band got stronger from around 3500 up. It is definitely quicker because I remember the power would drop off after 5000 at WOT and I would just be waiting for it to shift. Now it'* nice and steady up to 6000. I'm really pleased with the results. There was also no noticeable decrease in the lower rpm range, which could be expected b/c of the smaller intake runners.
Another thing I noticed was it really quieted my engine down. O well it was a good trade off.

Sounds good! Did you happen to take any pics?

Saw you had a superchip in your sig. How do you like it?

I really wanted to wait to get a digicam for the install but i wanted to hurry and install it more. i'll take a pic of it installed as soon as i can.
As for the superchip, i really like mine. It claimed 20 ft-lb of torque and I think 18 hp as well as raising the trans pressure and shift points. I don't think i got quite as much power as advertized but it was pretty noticable. I shift at a little past 6,000 and the shifts are firmer. I think i paid 200 bucks for that as well. IMO it'* worth it.

Thats cool. So about how much HP are you pushing all together now? Torque?

I really don't want to try and guess b/c i'm not positive were each mod is adding hp or tq. The chip says 20lb of tq but i'm not sure if that'* peak tq or just high end. On ZZP'* web site it says the insert ads 9 hp peak and 30 hp close to my shift point(i think) but the test vehicle had a hv throttlebody and rocker arms. so ya really never know. The closest dyno wants 200 bucks for a few runs. I do know that there is a free dyno in Wildwood NJ during the car show so i'll try and hit that up in september.

Damn! 200 for a dyno run? I always thought they were cheap, like 10 bucks or something.

how much was it? Would you say it was worth the price?

Macho, I emailed Superchips and they said they dont make any for a 97 Bonneville. So were SOL, sucks. Then again, what about that other device that plugs into your obd outlet? It claims it does the samething...........?

I was talking about the intake insert...I think DP has the thing that you are talking about. It just helps the timing, doesnt do anything for the speed limiter or shift points. That thing is like $250, you are probably gonna get more bang for your buck going with the Intense PCM that is supposed to come out soon for our engines.

Oh Umm, I knew that. The insert looks pretty good, I think they also sell just the small little piece that goes near the TB also, if ya dont want to shell out 200$. But that mod definetely looks like a good one!