[Sinatra]

I recently ran into a bit of cash and decided to bolt up some gt40 heads and an e303 cam.

I heard the Sn's are different in that you have to dull down the computers learning in order to get a proper tune. I have access to an OBD1 computer from the stone age, but i'm guessing I need to purchase a special tuning device.

Any good experience with one?

[fogged306]

Depends on how hands on you want. Once you get the tune correct, you use the adaptives to your advantage (or you can just turn them off completely with a QH). If you want to do something that you can fine tune very well, get a QuarterHorse, the software for it, and a wideband. Just don't expect it to be easy or take only a few days to get a decent tune running and you'll do ok. If you want something more user friendly, look into an Anderson PMS. The SN computers got a bad rap from the stock tune. It isn't as mod friendly as the fox computers, but once you tune it, it's actually a better platform to use.

[Sinatra]

If we are talking $1,000 plus for these things I think i'm better off getting a 351 block

[fogged306]

QH is 250, software is $130 for both and you can get a wideband for $150 that will work with the QH. Just need to have a laptop already or you are getting up there in price then. Anderson PMS is almost 1k new but you can find older models used for 4-500.

Regardless of what block you get, you've still got to tune it.