I used AutoTap. Tuning doesn't really work that way, though. Rewriting the PCM takes a couple mins, and you must have the car off. What you can do is tune the PCM so it drives/shifts differently when at WOT vs. normal. Once you see how much better the car drives with a tune, you won't want to use the factory settings ever.

Until you get a tuner, one way I used to hold the RPMs higher is to manually shift.

I was able to hold mine to 99 mph in 2nd gear by manually shifting (this was after a few mods, be careful).

yes my car is still goverened at 108 mph tho lol shhh i didnt test it haha jk i cant remember what gear i was in !!!! but it still shifts on its own !!! at 48 for me so i cant find much about tuners u kno my car and what will be done to it and im on a very low budget waht would u sugest for a tuner taht WILL work haha unlike my dads..

PowrTuner is $380. It's not cheap, but it's worth it.

Agree with oldsman, you can program enough fuel with a tuner to run the 3.4", but a 3.25" needs additional mods to help flow. What he's calling "boost stacking" is what happens when you try to cram too much air into the engine with no way to push it out.

It's a lot of money, but compared to what you'd spend to get the same numbers out of a N/A engine, it's a bargain. Modding cars to be fast is expensive, period. We make up for the cost in already having a supercharger, and the fact that it's a Buick let's you save on insurance.

Btw, if you drop a valve while installing valve springs, you'll wish you'd bought a $20 air tank! If you think modding is expensive... try paying someone $1000+ to pull the heads and retrieve a dropped valve!

If you don't have a tuner, you need to make some other supporting mods to run a 3.4 safely. I'd recommend an MPS starting with a 3.5.

I picked up a DHP PowerTunr a few months ago. Personally, I wish I'd skip DHP's PowerTuner and spend an extra $100 for an HP Tuners setup. If you think you might be interested in tuning, save up $500, skip the $300 Autotap and go straight to an HP Tuner.

Why is HP Tuner better than DHP?

I don't care for HPT's pricing/car structure, but their software is just... better. I can't stand the UI of DHP's, it is sooo poorly designed. I don't think it's designed at all, it just kind of happened. It's a terrible scanner, I wish I still had my autotap. I could go off for hours about the things that irritate me about it but it's not really for this board.

My experience with HPT is from others locally who use it, and I'm just jealous every time I see theirs. It's obviously worth the extra dough.

All my opinions, and to some that stuff doesn't matter, but I can't stand the temperatures being recorded in METRIC ONLY, drives me up a friggin WALL, and that's just the start...

I also can't stand the DHP's scanner. I use AutoTap to scan, only tune with DHP. Maybe that's why I can put up with the PowrTuner's UI.

so what if i get one of those reprogrammed PCM's off of 3800performance.com will it work with my car if i get the 1998 buick regal GS one???? its 100$$ for it !!!