Re: Performance ECU Questions - Saab Performance Bulletin Board - Saabnet.com
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If hardware upgrades for a given software upgrade are merely suggestions, then I'd go for it (it would make sense, given your situation).
I believe that the 9-5's intercooler is way more substantial than that of a 9-3, so that may be why it's (apparently) not a required upgrade for those power levels. I don't think that a sub-par intercooler would be much of a concern in terms of engine safety, as your engine would make adjustments (kill boost, retard timing) to save itself. Regarding the intake, I'm not sure that's really needed, but I could be wrong. The stock intake on an OG 9-3 is good for up to 400hp according to Nick Taliaferro. IIRC, the round filter on the 9-5's equal or more surface area than that of the OG 9-3, so it seems like you wouldn't need to upgrade. The exhaust however, leaving stock is going to provide substantially more backpressure with those higher power levels. That seems like your most likely place to cause damage, such as burnt exhaust valves. Also, I'm not sure if a different FPR is recommended for any of those tunes, but double check that too. That will absolutely be required if they call for it.
posted by 198.137.2...
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