i think i am going to put a 2.6 on it soon

 

maybe ur 3in catback? I ran 3inch dp to stock exhuast and got 262 on 42's and a 2.9

 

I cant imagine it would be a boost leak, Boost leaks on Supercharged cars run like ****. Check you bypass valve. Maybe be stuck open or broken.

 

i dont know man something sounds up i put down 245 with the mods in my sig. on stock header and downpipe on a mustang dyno that reads low normally

 

Yeah they do read low but your numbers are almost just as good lol

SMG does know their **** dont get me wrong but he sometimes tunes on the conservative side so tell fred to lean it out

Just tell him you want numbers and not drivability lol

 

i might swap my downpipe and go back next week i will see what he says then

 

OH, are you running a trifecta tune?

 

if ur gonna sell the hahn let me know lol

 

no i am not running a trifecta tune. i was and i got tuned by smg yesterday

i am not going to sell the hahn i might try to go back to a 2.5 in exhaust but i am keeping the hahn i am going to go turbo one of these days

 

It sounds to me like a low reading dyno.

 

i dont think it reads low but the car fells good. i guess we will see once i make it to the track. last yeah my best was 14.0 at 103 i think with the 2.8 and trifecta tune

last year with the trifecta tune and 2.8 and 2.5 exhaust it did 247whp and 231wtq on the same dyno but it drives better and feels faster now then it used to

here is last years dyno sheet

 

Glad to see you picked up a good tune. Maybe trifecta tunes are great on other cars but for LSJs they are terrible. We tried one on my friends car and my 100% stock stage 2 car beat his 2.8 60s meth car. Pretty sad.

 

Did you have meth on this dyno?

 

yeah i did but it was with a 3gph nozzle i have a 7gph nozzle on it now

same thing happened to me i lost to a stage 2 with a catback and intake

 

yea **** all that. My car would EAT a stage 2 lol.