[kropscamaro16]

lol whos the tuner i made more with just tune intake headers and exhaust and on a heartbreaker dyno

[geaux_tigerss]

Originally Posted by 6spdhyperblue

It can be torque tables as well. Not retarding the cam or closing the throttle blade on you, what ever it thinks to meet the torque(low) demanded. If this guy is reputable in genv and NOT only LSx then this should be moot

This level of power loss is outside of tuning window (safe/aggressive) imo.

Obviously fix the exhaust first.

This was my thought. Torque tables weren't adjusted and pulling timing. Pretty easy to figure out with a datalog and the right PIDs.

Also easy enough to bump the tables 10 or 15% if that wasn't done the first time and dyno it again.

[JCunningham]

didnt see you do have headers. but if you have a exhaust leak befor the o2 its not tuned properly

[Zboy136]

Something definitely isnt right, your hp is dropping off at 5700rpm

[Dixie ZL1]

What was the E% for each run?

[Cupcake37]

Originally Posted by Dixie ZL1

What was the E% for each run?

I do not know

[Stefano]

This first. Would have seen unstable fuel trims in data log.

Also, a base line Just prior to modifications would have been ideal.

Originally Posted by JCunningham

is that the side the tuner put the o2 sensor on. if so he couldn't tune it. and the cars not going to run right. you cant have any leakes befor the o2 or 18" behind the o2. if he used the pass side for the o2 then fix your leak and reset the fuel trims because the drivers side is off. Your tuner shouldnt have tuned with that leak.

[DAFLab-SS-18]

Originally Posted by JCunningham

is that the side the tuner put the o2 sensor on. if so he couldn't tune it. and the cars not going to run right. you cant have any leakes befor the o2 or 18" behind the o2. if he used the pass side for the o2 then fix your leak and reset the fuel trims because the drivers side is off. Your tuner shouldnt have tuned with that leak.

That would be true if you didn't have an X-pipe.


To the op, honestly. One thing sticks out to me and it's this.

You have put 30,000 miles on a modified car in a year. We all know, that you most definitely got some hard miles. Burnouts. Digs. High speed runs. Canyon runs. Etc. In that 30,000mile year of driving.

Your tuner knows what he's doing. The mods do increase power.

You just dogged the shit out of the engine all year after getting modded and now it has some wear and tear on the power. What's the current mileage on the car? What quality fuel are you running what %e did you have in the last test? What's the temperature difference? There are way too many factors. Maybe do a compression test?

[Cupcake37]

Originally Posted by DAFLab-SS-18

That would be true if you didn't have an X-pipe.


To the op, honestly. One thing sticks out to me and it's this.

You have put 30,000 miles on a modified car in a year. We all know, that you most definitely got some hard miles. Burnouts. Digs. High speed runs. Canyon runs. Etc. In that 30,000mile year of driving.

Your tuner knows what he's doing. The mods do increase power.

You just dogged the shit out of the engine all year after getting modded and now it has some wear and tear on the power. What's the current mileage on the car? What quality fuel are you running what %e did you have in the last test? What's the temperature difference? There are way too many factors. Maybe do a compression test?

Lol dogged the Shit out of her. We just hit 100k! Don’t tell me you not gonna put miles on your lady so the next guy can. Car is well taken care of and serviced regularly I will be throwing in a cam up next so if anything internally is wary It will be taken care of then. But for some reason just doesn’t make any sense how car drives perfectly/fine up until the 2nd batch of mods? Then again I’m no expert. No x pipe on my car btw.
Prior to install of mods I never heard any exhaust leak, after install it started ticking super loud. I’m really wondering if that is playing a bigger factor then expected.