FURBY LOC"S

So i have a 2015 c7 z06 with z07 pakage im currently running a f1x at around 19.8 psi and im only making about 970whp on e70 that is really low specially for a manual car
i have all the suporting mods like cam heads clutch 2 inch headers no cats amc tune port injection dual meth nossels tripple fuel pumps 1700 injectors flex fuel sensor etc i mean everything to be a high hp car atleast to break into the 1000whp mark easy but its not
air fuel ratio is around 12.2 to 12.4 26 degrees of timming no pulley slip or tire slip any toughts?

LuckyC7Z06

What’s the DA there while making your pulls??

FURBY LOC"S

Excuse my ignorance da?

black_c7

My c7 made the same power at 20psi on pump gas and meth, i would assume its a tune issue or something, post a dyno graph that might help identify the issue

FURBY LOC"S

I will tomorrow when I go to the shop

C7&7

It's the tune. I am betting you have a tuner that is approaching this tune like a LS car. I would put that car in a trailer and send it to a quality tuner. CPR in Phoenix, LMR in Houston, ETC.

0Billy@MTI

We can help with the tune problem.

Dane@LGmotorsports

Tune or Cam. Obviously tune would be the first thing to look at.

FURBY LOC"S

how much degrees of timing is it safe to run ?

FURBY LOC"S

i might need to have someone look at the tune and remote tune the car if my tuner cant figure out were is all the power he just had a auto done same parts almost and it made 1050 to wheels so he must know what his doing but ever since we did cam and heads it never put the power it shold have so im also starting to wonder if the tune is not it but the heads and cam is the problem

0Billy@MTI

On E70, hit it with everything!! lol Mid 20s.

Dane@LGmotorsports

I thinkk 28 is about the most. But don't quote me on that I'm not our tuner. Also A2W or PC A2A Intercooler?

FURBY LOC"S

it has a air to air vertical intercooler from procharger

Cordes Performance Racing

making power is cake because a tuner has a car that made big power means absolutely nothing in terms of can it run a time, drive, and perform. Hell I witnessed a car from a place that's a vendor on hear over a year ago that was so jacked i couldn't stop laughing. If your tuner turns off torque management in the tune on an auto and damn near has the knock sensors off they suck end of story. Is your issue tune related, maybe. But it could be selection of parts.

FURBY LOC"S

well i have all the best parts that $ can buy on the car the car is well put together and i have built the car on the common parts everybody uses to make 1050 to 1300 whp the only thing im not sure is on the cam and head package since i did not spec d that but from what they told me the cam and heads were spec d for the f1x blower with bigger exhaust valves i will try and get cam specs
and your right about power on dyno and running times i just exepcted more whp specially on e70

FURBY LOC"S

he did mention that there was knock noise from knock sensors or something like that he feels as if something inside engine is not right like a tight bearing or something to that affect to cause some kind off drag
any input on that i just find that hard to belive since car bone stock made 545hp whp and around 550 torque

C7&7

dont let him tune that car anymore

robert miller

I agree with you this car WITH A GOOD CAM with the correct overlap on the cam should be in the 1100 plus with no problem on E70 Robert

Earl H

This^,,,info provided is insufficient to diagnose problem. Other cautionary note...be careful about chasing a number. Can't tell you how many 1000whp cars get "drug" by "lesser" cars or worse still run 10's @ 130's at the track...but hey, they have a dyno sheet.

FURBY LOC"S

I think we might have found the problem when we switched to the lg 2 inch drop spindles the lower control arm was to close to the inner barrel of the 18 inch wheels (CCB brakes) and when on dyno being strapped down and under power the lower part of control arms were rubbing on the inside of the rear wheels
We switched to 19 inch wheels but the tires were not drags so they just spined on the dyno at 4500rpm so now i will have to wait till i get a 15 inch conversion kit and try again and hopefully it fixes the issue of lost power but its the most logic explenation