I have a 2001 Chevy Camaro SS with a few modifications and upgrades. I bought this way, and was told it was just 02 sensors ect......

I have 3 codes showing, and need to know if my mods would make these codes appear or if I need to replace the knock sensors, and diagnose whats causes the other code.

P0171 fuel Trim System Lean Bank 1

P0327 Knock Sensor KS 1 Circuit Low Frequency

P0332 Knock Sensor KS 2 Circuit Low Frequency

Thank you in Advanced.


Mods are as follows:
- Engine: LS1 rebuilt earlier this year with around 1,000 miles on the new engine, nothing was wrong with it I just wanted to pull it and upgrade the parts. New heads, cam, valve train, cam bearings, piston rings, rod bearings, intake manifold, throttle body, poly engine mounts, and new fuel injectors, cam gear, timing chain, crank gear,
- Cylinder Honing, Deck Cleaning. Sand Blasting all internal work done at Performance Machine in Manhattan, KS, earlier this year
- Yank SS Series 3200 stall
- weld-in subframe connectors
- moser 12 bolt rear end with 4.10 gears
-two 10in rockford fosgate subs with custom made box (built it myself), along with a rockford fosgate amp
- new fuel filter when engine was pulled
- oil changed REGUARLY
- new wires and NGK plugs at time of engine rebuild
- 1 7/8 headers with True Dual exhaust and two Borla XR-1 Muffler
- always garage kept
-Replaced the shocks and Springs about 2 years ago with Strano Springs and Koni Shocks.
-new poly transmission mount
-Brand New Nitto- NT555R tires all around

Precision Race Components 225cc As-Cast Aftermarket Casting Heads & Cam Package
PRC .660" Lift Dual Valvespring Kit w/ PAC Springs and Titanium Retainers
Texas Speed TorquerV4 231/234, .629"/.615", 111 LSA
7.450"
Cloyes LS1/LS2 Single-Roller Hex-A-Just w/ Z06 Chain, 3-Bolt Cam (9-3158A)
Melling High Volume Oil Pump (#28-MEL10296)
62cc (3.9"-4.0" Bore Size)

Yank SS Series Converters
3200

Deluxe Heads & Camshaft Bolt & Gasket Kit
ARP Hex Head Bolt Kit #46-134-3609, Long and Short
GM MLS 5.7L, 3.910" Bore show contact info x 1)
Not Applicable
FAST # 111-54009-8 Seals For Use With FAST Intakes
Cometic Center Bolt Valve Cover Gaskets (p.n. 202-C5170 x 2)
LS1-Style Valley Cover Gasket show contact info )
ARP Balancer Pulley Bolt, Wet Sump Crank (46-234-2503)
Car O-Ring (p.n. 25-COR)
GM LS1/2/3/6 MLS Exhaust Manifold Gaskets (p.n. show contact info x 2)

FAST LSx 92mm Black Intake Manifold & Throttle Body Combo
Nick Williams 92mm Throttle Body (p.n. 16-92)


Thank you

 

Who tuned the engine and why aren't you asking them? Are you running stock Knock sensor? built motors tend to shake too much for them.

I am not sure anyone is going to be able to help you. You built a custom engine normal does not apply.

 

agree if its not tuned it needs it, just headers will set off knock sensor. no or bad tune could also explain the lean code.

 

They said they did not have the engine tuned, and yes they are stock Knock sensors.No one in my area does engine tuning, the joys of small town living. I appreciate the feedback, and will try to track down someone to tune the motor to see about putting in a tune.. Thanks for the feedback. This is a new build only about a 1000 miles put on after build.. The Car runs excellent but im starting at a new, since the guy sold all his vehicles due to deployment. Not available for all the questions i want to ask.

 

Dude a good tune will be the best money you spent so far. There are other mail order options. Maybe give the below guy a call. Tell him the mods and ask what he would think about a mail order tune. I would think you would be best just to get a new PCM with the tune installed. Keep your original as a back up.

https://www.tunedbyfrost.com/


The mail tune will be better then a stock tune for sure. Might want to ask them if they could estimate the likely gains from a dyno tune.

 

Thank you for the info... I brought the SS this morningto Modified by KC a Hotrod Performance shop in Kansas City, KS for a tune. I look forward to getting it back..