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exhaust theory

Started by crazy8svt, September 17, 2014, 08:42:56 PM

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crazy8svt

September 17, 2014, 08:42:56 PM
So long story short my wife was rear ended in my 2011 sho and it destroyed the exhaust. So after some looking around the factory exhaust cost as much as stainless works turbo back with cat. So I did what every rastional man would do -more power better sound-. Then it starts now I had to tune it -livernoise- . Now wouldn't you know it I've got that transmission issue where it drops out if gear so now I have to bring it in for warranty work now the stock tune has to go in. Let the problems come as many already know it leans out from the extra airflow and trips the check engine light. So now my crazy thought what do you guys think about  taking the tips off and having a reducer made down to 1.5" to create some back pressure to stop the computer from leaning out. This would be a temp. thing of course for warranty work and emissions so what do you think and or do you have a better idea

Sorry for the not so short story

glock-coma

#1
September 17, 2014, 09:45:43 PM
What code are you getting? Do you have factory downpipes or did you replace with stainless works also?

Cat back exhaust doesn't generally trip a cel


Sent from my iPhone using Tapatalk
2010 red candy metallic non PP 402B
AJPTURBO 2 BAR Tune Stock 14.1@100.3 / Tuned 12.83@107.7
K&N panel, RX OCC, Sp-534 @.30 Tint 50%F-35%R BOV bypass
1997 SHO silver frost (sold)
1990 SHO triple black 5-speed (saved my life)

ZSHO

#2
September 17, 2014, 09:58:23 PM
IF you give us a little more details on your vehicle,we could further assist a fellow member more promptly,thank you.


2013 Performance Package SHO| Livernois Custom Methanol Tune|3-Bar Map|Reische-170-Stat|Full Race Tial-10psi BOV in Black|PPE-Gloss Black Hot Pipes|EPP Dual Intake in Gloss Black|PPE Catted DP|Corsa Sport Cat Back Exhaust|H&R Sport-Springs|CFM Performance Billet Valve Cover Breather In Gloss Black|Llumar 20%Ceramic window Tint|MSD Ignition Coils in Black|Extreme Roof Spoiler|Redline Fluids all around|Gearhead Intercooler|First-SHO With Direct Port Alky-VP-M1-100%-Methanol Injection|LMS-Custom-Dyno-Tuned @ 415whp-465wtq| Best Trap Speed of 115.54 mph|

SHOdded

#3
September 17, 2014, 10:00:53 PM
If you have catless DPs, Livernois might have turned off the CEL caused by the rear O2 sensor(s).  Putting the stock tune back on would bring the CEL back on.
2007 Ford Edge SEL, Powerstop F/R Brake Kit, TXT LED 6000K Lo & Hi Beams, W16W LED Reverse Bulbs, 3BSpec 2.5w Map Lights, 5W Cree rear dome lights, 5W Cree cargo light, DTBL LED Taillights

If tuned:  Take note of the strategy code as you return to stock (including 3 bar MAP to 2 bar MAP) -> take car in & get it serviced -> check strategy code when you get car back -> have tuner update your tune if the strategy code has changed -> reload tune -> ENJOY!

crazy8svt

#4
September 17, 2014, 10:58:01 PM
2011 sho stainless works  down pipe with cats and cat back exhaust and livernoise tuner with there tunes

SHOdded

#5
September 18, 2014, 03:41:21 AM
Can you pull the codes and post them?  Be interesting to know what the SHO thinks is happening.
2007 Ford Edge SEL, Powerstop F/R Brake Kit, TXT LED 6000K Lo & Hi Beams, W16W LED Reverse Bulbs, 3BSpec 2.5w Map Lights, 5W Cree rear dome lights, 5W Cree cargo light, DTBL LED Taillights

If tuned:  Take note of the strategy code as you return to stock (including 3 bar MAP to 2 bar MAP) -> take car in & get it serviced -> check strategy code when you get car back -> have tuner update your tune if the strategy code has changed -> reload tune -> ENJOY!
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