Is anyone doing good, safe tuning for these yet? I saw something from ECU Tuning Group but they never post dynos or reply to questions here.

 

Anyone?

 

Have a look at GIAC website, attached dyno from their site.

 

I did my 07 GTC with Fabspeed. They are board sponsors and David Rossi was excellent about correspondence and information. He can tell you if they have a tune for the 2013 Speed.

 

That is for the 2008 model - 2013 is new and already has more horsepower.

 

I expect there is more power to be had put of that motor if one is willing to tune it. Factory tuning is always conservative. I told David that you are inquiring now it is up to him to impress you.

 

Lol !

 

I would go with Fabspeed, GIAC or DeltaVtechnologies in Sugarland, Texas. Just my choices.

 

Ive used ECU tuning Group and was happy with the result but from what i understand the speed can go to 650hp safely

 

That's only 34 HP more than I have now.

 

Exhaust system is all you will need to change. Talk to Dave from Fabspeed. I am into high performance Bentleys, you kinda don't want to go beyond that 650-700hp. Or talk to Jayson from Deltavtechnoligies in Texas.

 

Can you expand on that please? I am at 600hp with my speed and it does not seem to be worth the money if I am only going to gain minimal WHP which probably will not be noticed with the weight of the car. I am endeavoring to reduce the unsprung weight with lightweight ADV wheels.

 

Lighter more affordable brake disk coul be bought from Deltavtechnologies. Carbon ceramics are really expensive. Lighter monoblocks on 20" is your best bet. Those 22" will get you killed especially if you are performance minded. To rationalized the 3 to 4 Gs on exhaust for about 25 to 35hp more is kinda hard. Your OEM stock exhaust are really heavy. You will lose about 25 lbs going with a lighter exhaust system. Better flow less bogging and a little more responsive on the pedal. Once you mod. You keep on modding. It's addictive.

 

Who makes the best exhausts for these cars?

 

Wow, it's a tough one. I like Capristo and they run for about 6g. They don't have down pipes though. I would go with Fabspeed and ask them for a custom muffler too. Your ECU is already tuned. So you should be near 650hp after the exhaust. Superlative tuning in Newport Beach has sways bays and intercoolers that are directly bolt on if you want more performance. What year is the year of your vehicle.? High flow air filters could be bought from Deltavtechnologies in Texas. Depends what you want.