I'm very happy with the '94 cams I put in my '96 wagon! No other changes required.
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'96 965, 16' wheels, Michelin Pilot Sports, rear 18mm bar + Koni, 201 HP cams, 142K. Put 200K on '85 745 TD.

Get early cams from 92-94 960 for 20 more hp. Forget about the loss of low end torque. That was just volvo advertising which has been repeated over and over on this board. The main difference in low end torque between early and later cars was the switch from 3.31 to the later 3.73 differential ratio, not the cams. You already have the 3.73 so you get the best of both worlds with early cams.

There is not much you can do with a chip in a normally aspirated car.
The only thing is to advance the timing and richen up the mixture, maybe.
Remember you already have to run premium gas, according to the book.

The early cams add top end power at the expense of some low end power.
Adding a turbo or two to an engine whose compression ratio is already high is an exercise in learning how detonation can blow up the engine. Check out the CR on the 5 cyl engines. The low boost engines have less CR than the NA engine, and the T5 high boost engines have even less CR. Of course if you added oil squirters and low compression pistone, the results would be impressive. So would the price!

I do agree that ensuring the intake has no restrictions and no hot air coming in would help. Avoid the "cold air intake" accessories, because you already have one.

17 inch wheels can be very heavy. That equals slower acceleration because they have to accelerated up to speed. And if the circumference of the tires is more than the stock tires, that causes slower acceleration as well.

-- S' V' , not offering much help.

http://www.powerchipgroup.com/index.asp
Is the only source that I know. Question is they show the unit for 960 95-97 but not the SV90. There might be something different between the two or it might just be a typo.

PowerChip makes one, but I've never heard of anyone that even has one... just under $500. But you'll need to run premium (93 Octane) fuel to make use of it.

http://www.powerchipgroup.com/interact/datasheets/datasheets_two.asp?pid=Vol0103

You can also get cams from a '92-'94 960 and swap them in... a little less low end torque, but you get a lot more in the top end.

Maybe modify your airbox so the thermostatic flap isn't stuck sucking in hot air? Or even route some custom tubing to draw in a little more cold air from the front. Also, maybe have a custom exhaust fabbed up.. something I'll probably be doing myself to mine this summer.

I used to have something from SCT that said they sold an ECU upgrade with the cams... don't know where it is now, or how much they charged.


-Steven