RealFastV6
@jb_and_his_coffee
Re: Miss fire on launch
Damn such a good call - I always forget to direct people to that site.
Damn such a good call - I always forget to direct people to that site.
Miss fire on launch
- Thread starter Skinner2013
- Start date
Skinner2013
New member
Re: Miss fire on launch
No cat
No cat
RealFastV6
@jb_and_his_coffee
Re: Miss fire on launch
Ok, yeah, so that's a problem. The stock boost control is "calibrated" for the stock exhaust. Removing the cat and putting a good flowing exhaust is great for some additional power, but the ECU won't be able to control it accurately.
Ok, yeah, so that's a problem. The stock boost control is "calibrated" for the stock exhaust. Removing the cat and putting a good flowing exhaust is great for some additional power, but the ECU won't be able to control it accurately.
Skinner2013
New member
Re: Miss fire on launch
Oh. I put some octane boost on the way and no miss fire/back fire. Can also be a poor gas situation?
Oh. I put some octane boost on the way and no miss fire/back fire. Can also be a poor gas situation?
Skinner2013
New member
Re: Miss fire on launch
As well? (dam smart sent the reply before I finished my sentence)
As well? (dam smart sent the reply before I finished my sentence)
RealFastV6
@jb_and_his_coffee
Re: Miss fire on launch
The octane booster would help because at least when you overboost you won't detonate \ knock. You've only got 91 Octane out in Phoenix so immediately as soon as you get into 16-17psi spikes you're going to be getting knock. I'm sure you're getting some knock when you roll into it too, it's just not as noticeable because the boost spikes aren't as bad.
This is very bad for your engine. You should stay out of it until you do something to resolve it.
You've got a couple good options...
1. Put a cat back on it.
2. Put a chip in it that's better calibrated for the free flowing exhaust and lack of cat.
And the least desirable option...
3. Put a manual or other aftermarket boost controller on it.
PS. I'll be back out there either next weekend or the following weekend or both. I usually take a ride up to the Pavilions in Scottsdale on Sat nights, would love to see the truck and always nice to meet more SyTy dudes. I know there's at least 3-4 active guys in Phx metro area.
The octane booster would help because at least when you overboost you won't detonate \ knock. You've only got 91 Octane out in Phoenix so immediately as soon as you get into 16-17psi spikes you're going to be getting knock. I'm sure you're getting some knock when you roll into it too, it's just not as noticeable because the boost spikes aren't as bad.
This is very bad for your engine. You should stay out of it until you do something to resolve it.
You've got a couple good options...
1. Put a cat back on it.
2. Put a chip in it that's better calibrated for the free flowing exhaust and lack of cat.
And the least desirable option...
3. Put a manual or other aftermarket boost controller on it.
PS. I'll be back out there either next weekend or the following weekend or both. I usually take a ride up to the Pavilions in Scottsdale on Sat nights, would love to see the truck and always nice to meet more SyTy dudes. I know there's at least 3-4 active guys in Phx metro area.
Skinner2013
New member
Re: Miss fire on launch
Cool thanks everyone. You guys are great
Cool thanks everyone. You guys are great