# Whos making all the noise with a turbo Cobra? **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [April 12, 2010, 6:33am UTC](https://forums.speedlife.net/t/whos-making-all-the-noise-with-a-turbo-cobra/153213 "2010-04-12T06:33:03Z")\ **Posts on this page:** 1\ **Showing post:** 78
**Author:** ![fourseasonsandles](https://avatars.discourse-cdn.com/v4/letter/f/90ced4/32.png) [@fourseasonsandles](https://forums.speedlife.net/u/fourseasonsandles)\ **Post date:** [April 16, 2010, 9:07pm UTC](https://forums.speedlife.net/t/whos-making-all-the-noise-with-a-turbo-cobra/153213/78 "2010-04-16T21:07:55Z")
> [@Jack](#): > > Does it really read that low? I cant speak for any other car other than subys. But this dyno puts stock STIs at about 200whp. That is pretty low compared to some of the other Suby tuners out of NY. EFI logics has a Mustang Dyno in CT and their stockers read in the 230-240whp range. Mike has said that his dyno reads about 20% lower than most others out there. FWIW, I put down 280whp on that dyno. Anywhere else with those same mods I would probably be in the 330whp range. > [@Quick Foreshadow of 2006... PIC](https://forums.speedlife.net/t/quick-foreshadow-of-2006-pic/6194/22): > > There’s just a big difference in the dynos. You seem to add 18-20% to AWD numbers on our dyno to get near Dynojet numbers. > > For example…add 18-20% to the 08 STI numbers from our dyno and you get something in the low/mid 230 whp range, which is typical of a stock STI on a Dynojet. > > EDIT: We just saw a dyno graph of a stock STI on AMS’s Dynojet. It put out 258 WHP stock. Talk about a high reading dyno. So, just for kicks… if the math works correctly on your numbers (in a perfect world) 603whp + 18% = 711whp on a dynojet :noes: But as most of you know, the final number means nothing. It is the gains made between pulls that is where the dyno is useful. --- _[View the full topic](https://forums.speedlife.net/t/whos-making-all-the-noise-with-a-turbo-cobra/153213)._