2015 RDS Manual
anyone know of a good place to get a good alternator upgrade?
nice thanks guys... where did you get the STi alternator? Off a forum? stealership?pleiad7 said:Actually, the STi alternator is 90 amp while the stock Forester alternator is 75 amp. I upgraded mine to the STi one at the same time I had my auxiliary lighting setup installed, and it handles it all with no problem.
I'd hope we could get the one that shocks someone. Put it on Sleepy's Forester, and let someone break in then... :Banane36:Hondaslayer said:I'm sure somehow, some way, some dumb schmuck would find a way to sue SOA after they got jolted.
techy101 said:Not to cause a huge debate, but everything I was able to find on the stock FXT alternator rates it at 90 amps, including refrencing the Mitsubishi P/N on the casing.
If you're looking to spend $$$ and get a really good upgrade, I'd recomend Ohio Generator. They did a build for me, and got me a 160 amp (hot) unit for $550, with a very low power band. That price included them having to buy one to rebuild. It's much cheaper to send one in to them to do the build. They're very well known/respected in the car audio community, and something like 160 amp is a walk in the park of them.
Be careful when reading specs, 99% of them will give you the cold amperage, which is generally about 10-20% higher then when it gets up to temp. So make sure you check if it's the hot or cold rating.
If you did choose to go that route, I've got a stock one thats in very good condition that I'm looking to sell.
Also, what are you doing to the car that will require an alternator upgrade?
That's really strange because Roo even confirmed the respective 75 and 90 amp ratings with the Subaru parts helpline when he did the research for my upgrade...techy101 said:Not to cause a huge debate, but everything I was able to find on the stock FXT alternator rates it at 90 amps, including refrencing the Mitsubishi P/N on the casing.
As far as starting in the cold, thats all on your battery. I've got an Optima Yellow Top under the hood (I should swap it for a redtop and put the yellow in the trunk) and live in Minneapolis. When were at the last ice race, about 1 hour south of the Canadian border the other week, we had a night in the -20's, and it was about -15 when we got up, and the car started up beautifully.AChan10 said:I live up here in the northeast and plan to do some car audio. I just want to make my car as reliable as possible esp. with the cold winters up here!
techy101 said:As far as starting in the cold, thats all on your battery. I've got an Optima Yellow Top under the hood (I should swap it for a redtop and put the yellow in the trunk) and live in Minneapolis. When were at the last ice race, about 1 hour south of the Canadian border the other week, we had a night in the -20's, and it was about -15 when we got up, and the car started up beautifully.
Can you be more specific about what car audio you're planning on doing?
-how many amplifiers, at what rating
-Keeping the stock battery, or switching it out, and with what
-adding a second battery
-any accessory lighting
-and any other electronics that you plan to add to the car
If you know all this before you decide to upgrade your alternator, then you can know what size alternator you'll need, and it won't be just a crapshoot.
thanks a lot man! just e-mailed himsr20dehauler said:Yeah, if you are going to have more then 600 watts you will need to get a high output alternator. I just got an Iraggi 180 amp alternator through a group buy on www.Caraudio.com . E-mail Dominick Iraggi, let him know that you were refered by Omar and you want a HO amp for your forester. I got mine for $400 and that includes a lifetime warranty (no core needed).
I got the 35D Optima redtop (I think that's the number). It really boosted the electrical system. Also run the Big 3 upgrade (0/2/4 awg cable) alternator to + battery terminal; Ground from - terminal to engine block and the side of your engine bay.