Which teg? B16, B18B, D16??? Any of the major EMS should work fine, but a few I have know work are haltec, and AEM. I have dealt with an AEM on a B18B and worked great, I've also tuned a K20 with an AEM EMS and it worked great. Personally my favorite EMS is a hydra, great resolution and features like 3d anti-lag(turbo toy), launch control, wideband o2 input but I just poked on their site and they don't make a plug and play solution for older tegs. I have limited experience with megasquirt (used on it on my old 280z with a chevy 350 under the bonnet) and it worked great on a simple TPI smallblock, but I've never tried it on a honda. Honestly your best bet for total control is an AEM EMS, very good product, very easy to wire, and pretty easy to tune.Whatever you do, make sure you do a conservative tune for the track, I've trashed quite a few motors from being a bit too aggressive in my tune.