Do you have a boost guage (not factory unit) that you can hook up to her car? I am wondering if you are having problems with the guage. My brother has a 1997 SSEi and his guages kinda go whacky sometimes.
Sometimes the boost guage will only show 2-3 psi, but it still is pulling just as hard as when it reads the normal 7-8 psi.

If you have a boost guage to hook up, or can borrow one for testing, disconnect the vacuum line at the Fuel pressure regulator and put a short line on, put a vacuum 'T' in, and connect the hose to the boost guage and the one going to the FPR and take it out for a full throttle test drive.
This will tell if you have a erronous boost guage.

Another cause may be a plugged catalytic convertor. Does the exhaust smell kinda out of the normal, or does the engine sound as if it'* kinda, constipated, under throttle? If so you might want to look into a #94106 high flow cat from www.justmagnaflow.com

Otherwise you may be getting KR causing the PCM to pull timing and thus limiting boost. Has the car had a tune-up recently? I'd also suggest a new PCV valve if you haven't done that yet. They are only like $3-5.

Well, considering the antics of your gauge, you either have a vacuum leak somewhere (could be the SC outlet gasket) or a bad MAP sensor. Those are the two most likely components. There'* a TON of vacuum lines. make sure you inspect them all, particularly the little rubber boots. Also check the vac lines that attach to the vacuum accumulator. It'* the black box mounted just to the driver'* side of the maxifuse relay center, below and towards the center of the car from the windshield wiper motor. There'* two vacuum lines under it that are prone to breaking/coming loose. Also, isn't there a problematic vacuum line on the Series2 under the snout of the SC? The Series1 doesn't have it, but I've heard several references to that one in the past.

BTW, where are you located? If you are near any of our many helpful members (as I found we have many, to whom I am very grateful after my security probs at B-fest) we may be able to set you up with scan or even a just good looking over.

True! Very True!
If you look directly under the nosedrive of the supercharger, there should be a rubber 'T' that attaches to the lower intake manifold.
This 'T' came unattached in my 1999 SSEi.

Here'* a pic from when I found the culprit for my defunct guage.

Thanks for the responses guys. My buddy has a boost gauge he can hook-up and play with and see if that'* it. As well, the guy with the GTP I know has a computer he can hook-up to the car and check it out, he'* out of town ATM though.

I'm in Colorado around the Louisville/Boulder area.

Edi: I just checked out the T under the SC snout and that'* all normal.

Is it just me or does the 3800 series SC seem more complicated than the SC'd Ford 3.8, lol.

Probably just me

I was thinking the other way around.

I ran my 99 SSEi against a 95 SC at the 1/8 track and beat the guy barely.
We both had the stage 1 pulley'* for our cars, but I had a muffler. We both also had CAI'*.

It was a very interesting race. Both the T-bird owner and I were very curious to see who had the edge.
If only the Bonneville had a manual trans, then there'd have been even more distance between the two of us, but the T-bird needs the manual trans to make up for the extra weight.

BTW, I have an Uncle and Aunt and a 2 cousins living in Boulder. My parents lived there from 1965-1968 also. I am planning a trip out there in the late spring with a couple of my older brothers. Might have to look you up and look the SSEi over if it'* still not up to snuff.

Hopefully the thing will be fixed by then!

I'm glad I know the guy with the GTP, because all my friends are Supercoupe owners!

I was looking-up the specs on the Bonne and it'* slightly faster than my 5-speed SC, in stock form that is.

If I get that Bonne running well, I think one of my Supercoupe friends who also owns a nicely modded SHO is going to run it. See how they do against each other - the Bonne might have a slight advantage being at 5280ft above sea level with that SC sitting on top... as long as it runs normal!

Just wish I could figure this out toay

If the SHO is lightly modded, the SSEi should have no problem. I've handed a 5-spd SHO with straight pipes and a CAI it'* a$$ in a hand-basket with my Series I supercharged Bonneville SE. I only have a CAI for a mod (other than hotter coils from Series II SC 3800, 180* drilled t-stat, wires and plugs).

Well the biggest advantage it has is a Quaife LSD, then if I recall it has pretty much all the SHO bolt-ons. SHO'* are nice cars (owned one for a while), but really with all the bolt-ons you can't make them break over 210FWHP. I believe a guy around here with all the mods besides cams was around 201FWHP and like 199FWTQ. The biggest thing you can do to them is run a centrifugal(?) SC. We have a few of those guys around here, putting down somewhere around 350FWHP and 330FWTQ. Only problem is, they can't run very quick because of big traction issues, plus the torque steer on them is downright scary. The one ride I had in that SHO mentioned above, the owner was fighting to keep the thing straight.. I had my SHO with a 3.2L swap (out of an auto sho, more torque) and by the butt dyno it felt like it would waste the SSEi. Of course, as I said the SSEi is running so odd.

At altitude, should the Bonne smoke the tires? I've tried all I can on that car (besides neutral drops, like I'd do that, espessially when it'* not my car...) break torqing, traction control off and such, whatever and I cannot get it to even bark the tires on take-off.

That'* your boost problem. The SSEi should bark 'em good off the line. Regardless of the added traction of the FWD. I should burn them BOTH quite easily.