[Hostile_1LE]

My car is done with 93 tuning now… and it is slow as shit… I got tuned by GPI, and I have no doubts they know their stuff, but I think my car is just a dud. My setup is:
GPI SS3 cam
GPI ported heads
MSD Intake
103mm throttle
Roto-Fab
SE 1 7/8th headers
ATI damper

Internals are:
Johnson 2110r lifters
7.850 3/8” pushrods (.025-.030 preload)
CHE trunnions
SBE

When I was just FBO E85, I was able to slowly walk away from my brothers BONE STOCK 23’ mustang GT auto with 3.15 gears. Now it’s somwhere between BARELY slower than previous and BARELY faster than previous…

On the same dyno, I made 409whp stock, and 481whp FBO E85… I figured HCI 93 oct would make around 500-510 on that same dyno. Granted I haven’t taken it back there because they want $300 for a dyno pull. It doesn’t feel like it’s making any more power… and I’ve lost a lot of driveability.

[BMLMZ]

With Meth and E you should really feel a difference. FBO on an SS with 93 only is a big waste. Same with the mustang. All those big gains come from full E on the gen three coyote. All the rest of the FBO mods are 1-2hp here 3-4hp there.

[RideWithDanger]

There may be something wrong with the tune or install then, your FBO mods are set up to really complement the heads and cam in the upper RPM range. Granted, a 20 horsepower bump at that level isn't going to be very noticeable, but you certainly shouldn't be slower. I would go for an E tune if possible.

[Hostile_1LE]

Yeah I’m getting flex fuel tuning, I just have to wait a week because I’m busy.

[Baddawg53]

I'd think with that setup you should feel a big difference. I dyno'd at 475 FBO and E, and 550 when I added my cam and ported heads to it, with the LT2 manifold. It really pulled hard up top, I did lose some low speed driveability and idle quality, the torque numbers actually dropped just a bit when I added the cam. I'd guess something is going on there if you can't immediately feel it pulling harder. I think putting it on the dyno is money well spent here, if you're not seeing gains with that setup then there's definite proof.

[Hostile_1LE]

Yeah, only thing is, I’d have to go back to the original dyno I had it on. Which isn’t really a problem except for I don’t have much time.

[sactownbwoy]

I'm not expert, but I would say going from E85 to 93, even with the cam is where you are losing power. E85 is where you were making gains. Once you get it tuned again with flex fuel/e85 you will probably feel the difference.

[FlukeSS]

Originally Posted by Hostile_1LE

My car is done with 93 tuning now… and it is slow as shit… I got tuned by GPI, and I have no doubts they know their stuff, but I think my car is just a dud. My setup is:
GPI SS3 cam
GPI ported heads
MSD Intake
103mm throttle
Roto-Fab
SE 1 7/8th headers
ATI damper

Internals are:
Johnson 2110r lifters
7.850 3/8” pushrods (.025-.030 preload)
CHE trunnions
SBE

When I was just FBO E85, I was able to slowly walk away from my brothers BONE STOCK 23’ mustang GT auto with 3.15 gears. Now it’s somwhere between BARELY slower than previous and BARELY faster than previous…

On the same dyno, I made 409whp stock, and 481whp FBO E85… I figured HCI 93 oct would make around 500-510 on that same dyno. Granted I haven’t taken it back there because they want $300 for a dyno pull. It doesn’t feel like it’s making any more power… and I’ve lost a lot of driveability.

M6 or A10? If A10 stock converter or after market?

SS3 cam is not for drivability. So you can get that idea out of your head. SS1 would be, maybe an SS2. Some drivability can be had in the tune. You also lose torque on the low end with a cam, the bigger cam you get the more torque you lose on the low end. An aftermarket Stall converter will help with the launches.

I figure if you have an SS3 they had to have done a TC swap to maybe a 3000-4000+.

Have you compared 60-130 times, because that's where you are going to see the most gains with that kind of cam. And even higher up 130+

Just my thoughts feel free to correct me.

[FlukeSS]

Originally Posted by BMLMZ

With Meth and E you should really feel a difference. FBO on an SS with 93 only is a big waste. Same with the mustang. All those big gains come from full E on the gen three coyote. All the rest of the FBO mods are 1-2hp here 3-4hp there.

Meth port/direct injection?

[Germansheperd1]

Originally Posted by Hostile_1LE

My car is done with 93 tuning now… and it is slow as shit… I got tuned by GPI, and I have no doubts they know their stuff, but I think my car is just a dud. My setup is:
GPI SS3 cam
GPI ported heads
MSD Intake
103mm throttle
Roto-Fab
SE 1 7/8th headers
ATI damper

Internals are:
Johnson 2110r lifters
7.850 3/8” pushrods (.025-.030 preload)
CHE trunnions
SBE

When I was just FBO E85, I was able to slowly walk away from my brothers BONE STOCK 23’ mustang GT auto with 3.15 gears. Now it’s somwhere between BARELY slower than previous and BARELY faster than previous…

On the same dyno, I made 409whp stock, and 481whp FBO E85… I figured HCI 93 oct would make around 500-510 on that same dyno. Granted I haven’t taken it back there because they want $300 for a dyno pull. It doesn’t feel like it’s making any more power… and I’ve lost a lot of driveability.

Without a higher stall converter and a way deeper gear i think that new combo would kill the low end and not be pleasant on the street.

[FlukeSS]

Originally Posted by Germansheperd1

Without a higher stall converter and a way deeper gear i think that new combo would kill the low end and not be pleasant on the street.

I "believe" If he has an A10 he can't do a deeper gear, without swapping to a ZL1 rear end. The SS has a 2.77 rear end, and I think either the ZL1 or ZLE's have 2.85's. First gear is a 4.10 gear on the A10's, the car would be impossible to launch if he switched out to higher than a 2.85 rear end.

That's the biggest rear end you can use on an auto for these cars. If it is an M6 then he's running a 3.73 rear end and M6's 1st gear is a longer gear.

[Hostile_1LE]

it’s an M6 car. So driver error is DEFINITELY a factor, since I’m not the fastest at shifting.

[FlukeSS]

Originally Posted by Hostile_1LE

it’s an M6 car. So driver error is DEFINITELY a factor, since I’m not the fastest at shifting.

So you have a 3.73 rear end, and to be honest not sure if an upgraded after market Torque converter is necessary on the M6's.

I'll defer to the M6 guys expertise here.

But everything else I said earlier does apply. Bigger Cam, Drivability, etc.

Just probably can ignore what I said about Torque Converter and/or A10 stuff.

[Hostile_1LE]

M6 is stuck shift, so no converter, only clutch. Stock clutch is good for the power. My basis for thinking it’s slow is the gap between me and my brother’s bone stock 23’ mustang gt auto. The gap between us was the same both HCI on 93 and FBO E85. I feel like it shoulda been a little more. Also I haven’t done a 60-130 with my dragy, but hand timed was like 11.20 something in 4200 DA.