1990 here goes the story I promised. And to anybody who has yet to do the install please save yourself the time (instructions say can be done in 30 minutes) & read this post, as cuz of my mistakes it took almost 6 hours. 1st I was so excited I forgot to take before pictures. I got off work Monday @ 10PM, the same day UPS dropped the Plenum/TB combo. I got home, ate dinner, & started down the steps about 10:30 w/ as many toolboxes & things I could bring. I came back for the goodies & brought them down too. I busted out the instructions & don't have them on me now so the story will go by memory. I attempted to take out the 1st 2 bolts (EGR if I remember) according to step# 1 on the instructions. 1 was a deep-well bolt & the other was torqued way down. Since my car is a 2000 they probably had more time to settle. I didn't have any deep-well sockets so I was kind of screwed but attempted to use open-end wrenches. 10mm if I remember. I tried for a good hr, to no avail. I used WD40 before I started the process, by the way. I finally gave up & took my wife's (who was crashed out on the couch & couldn't believe I was out there in the dark w/ the temp about 29 degrees & a cold North wind @ about 8 mph) car to Wal-Mart to get a deep-well socket kit. The kit I bought had a 1/4 inch drive & a short-handled wratchet so I bought a long-handled one separately. I think I came back about 1PM. With the new tools it took no more than 2 minutes to unscrew those bolts. Then I undid the Throttle Cable assembly. That was a breeze. Then I had to disconnect vacuum hoses that were REALLY VACUUMED. I had to stick a narrow-tipped flat-head screwdriver, designed to use to tighten glasses screws. It took me about 30 minutes just to get the 3 vacuum hoses off. Then I undid the Main intake hose. After that I undid the 5 bolts holding the upper to the lower intake manifold. Then I undid some sensor connecting to the front of the upper intake. I can't remember in which order I did the last 2 steps. At last the stock Plenum/TB combo was off. I took off everything except the TPS sensor (cuz I forgot about it). ***Note for anybody reading this whose never installed this before...CHECK ALL YOUR GASKETS on your old combo to make sure you put them on the new Plenum/TB combo as it doesn't come w/ gaskets.*** I forgot a gasket; that's why I put that note in there. I connected the new combo together & added parts off the old to the new as it all fits in the same places. I did most of this inside; in the heat. I put the new combo really close by so I could compare the arrangements. Then I started plugging stuff to the new assembly. I started screwing it back in place, reconnecting everything in the order I disassembled it. I had a hard time getting the blue pipe connector piece that came from my Mac CAI to connect to the 75mm TB as it was designed to fit the stock TB. But w/ the small-head Flat-head screwdriver once again, I finally got it to fit. I finally got to a good stopping point. I was exhausted, cold, tired, & my nose was constantly dripping. So I went to sleep. I got up @ 7:45 & went outside to finish. At about 9AM I tested the Throttle Cable & realized that I had a clearance issue, came on here & you (1990) probably remember me ?ng that. Well, problem solved by taking my wife's car to O'Reilly's & buying a pouch of zip-ties (not needed) & 8 8M washers. I put 3 washers under the Throttle bracket for each of the 2 bolts. Then I had enought clearance. At about 11AM I thought I was done w/ everything & inspected & realized I never unscrewed my TPS sensor from my old combo & I left a gasket on the old combo. So I transferred the gasket to my new combo & worked on getting the TPS screws out. I soaked it w/ WD40 as I heard it was hard to remove those screws. I turned & turned but no movement. I did that for a while, trying both a Phillips screwdriver & wratchet w/ Phillips bit. I tried standing on it & putting my knee on it. No luck & all the while the screws are slowly stripping. Then I realized something so stupid. I was turning the wrong way. I was only making my job super-harder. So I doused it in WD40 & beat the screws really hard w/ a hammer on the edges & soaked again. Then I put my knee on it & used the wratchet. I turned as hard as I could & though I felt like dying both screws budged. So I breethed a sigh of relief & finished unscrewing. Put the sensor on the new TB using the new Hex screws. Highly recommended. All in order I was ready to go for a spin. I crank her up. The RPMs hit about 2000 & came down all the was to 0 & stalled. I looked dumb-founded & cranked her up again. This time she cranked up to about 2000 & dropped to 300-400. That had me worried as I thought I was gonna have to get a $75 Superchip retune. I ?d myself & wondered if so much air was coming in now that the system was overcompensating my making me run really lean. I mean, lean's good but not that lean. So I took her for a spin. Everytime I came to a stoplight & had to sit @ idle the car dropped to 200-300 RPMS & the Check Engine light came on early & stayed on. I posted a thread about that. Well I went to work that way. When I got home @ lunch yesterday I disconnected the battery cables for about 20 seconds after realizing that I left a sensor (not TPS, a plenum sensor) disconnected. I connected it & restarted. That didn't fix my problem & I had to go back to work. When I got home last night @ 10 again I disconnected only the negative terminal as instructed in a post I read here & checked all my bolts. Some were loose so I tightened. After 15 minutes I restarted the car. Check Engine light gone. Much happiness & relief. Highly recommended mod.