Backfiring after headers install?
Backfiring after headers install? I just installed headers couple days ago and the TSP TD system was put on today. My car backfires when I give it too much throttle and it also pops at idle but not like a backfire. I put NGK tr55s and MSD wires in there too. My question is, is it because I need a tune and it's running too rich? or is it because one of my plugs might be cracked or dead? I tried a search and it didn't help much. Thanks in advance
Pete
Pete
i would check all your spark plugs and wires. installing headers will make the car run more rich than stock, but i doubt it would make it rich enough to backfire at idle. now on deccel thats another story..
Ya if im going downhill and not on the gas my car will do a backfire type thing which i think its just bc im in need of a tune. As for you at idle ya something to due with spark.
Trending Topics
Launching!
Joined: Dec 2006
Posts: 222
Likes: 0
From: upstate ny
Mine backfired letting off at higher rpms after I put my headers on. I had new o2s plugs, wires and it still did it. I got it tuned and found out it was running lean, after the tune the backfiring dissappeared.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'
Brett Foote
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
TECH Senior Member
iTrader: (1)
Joined: Apr 2005
Posts: 8,807
Likes: 0
From: Vancouver,[KITSILANO].B.C. Canada *WestCoast*
Originally Posted by 99RebelZ28
Mine backfired letting off at higher rpms after I put my headers on. I had new o2s plugs, wires and it still did it. I got it tuned and found out it was running lean, after the tune the backfiring dissappeared.
If all the plugs and wires for sure.. also if its doing it when coasting it could just be DFCO.. Deceleration Fuel Cut Off. Its part of the factory tune.. basically the car cuts almost all fuel when you coast without touching the brake or gas. When you have stock manifolds and cats its not that noticeable but with LT headers and no cats it gets pretty loud popping.
Launching!
Joined: Dec 2006
Posts: 222
Likes: 0
From: upstate ny
Originally Posted by NHRAMAN
Bet you did not have BOSCH 13111 o2's.
, I don't know how lean it was really running because I had the intake manifold installed at the shop I got the car dynoed at, so this may have caused it to lean out even more? But anyways they didn't even finish the first pull on the dyno cause it was running so lean. I guess every car is different. 