Originally posted by Hydramatic:
The brake thing makes sense, but I highly doubt ANYONE would buy a stage upgrade kit that doesn't do anything...
S1 for the Neon SRT-4 does almost nothing for performance in itself. It gives you a more aggresive fuel map which allows you to pull a considerable amount more of that fuel fuel out, but you need something else to do it. Mopar doesn't actually even sell anything that could be used to pull the fuel out either. You can either do it by upping your boost (and with S1 you can run about 17psi safely) or by getting something to control your air/fuel ratio. Upping boost will lean things out, but it's obviously not the best choice to lean a car out. Some guys run S1 up to 20psi, but they all wind up having issues and most end up going back down to 17psi. With a return line and S1 (my set-up) you can actually run up to 21psi, and if you get water injection you can push it a bit further to around 23/24psi.
Anyhow, my point was S1 in iteslf for the Neon SRT-4 doesn't hardly do anything in iteslf. Dyno numbers go up less than 5hp and barely any more tq than that.
'03 SRT-4
50 trim turbo + support
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