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| jornsmith | 
				
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							hi guys. three weeks ago got lukey 2.5 inch exhaust put on my au. sounds sweet. but now when i put the foot down it seems to lag a bit in certain gears. it seems as if it lurches then moves then lurches . by the way my au is a 5 speed. any ideas and would putting on a set of pacies solve this problem as some people have said the original extractors might not have enough back pressure or somethin. cheers						
						
						
								
							 
				
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| USELESS | 
				
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							I have lukely exhaust with JimMock race series extractors.It was a massive improvement						
						
						
								
							 
				
 _________________ 14.77 @92.71mph July 06 14.52@95.68mph July 07 14.241 96.7 MPH in a shoebox/taxi au ford wagon!!Bwahahah still cant believe it!!!  | 
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| kodak | 
				
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							I have found the same problem using shell optimax.  Changed to BP ultimate and it feels alot better						
						
						
												 
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| twr7cx | 
				
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							Maybe they knocked a wire or sensor loose when fitting?						
						
						
												 
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| Blazing EF | 
				
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							I also have this problem ( No mods besides k&n and snorkle ) but sometimes you will give it a hit and she flys and others it is really f**k slow revving up the range. you can really hear the difference any ideas?						
						
						
												 
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| jornsmith | 
				
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							i'm stumped. i'm gonna change spark plugs thne leads and if it dont work i'm gonna put on a set of pacemaker 4480 extractors cause some people recon its the original extractors that are the prob not providing enogh back pressure from new exhaust						
						
						
								
							 
				
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| Waggin | 
				
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							Buying extractors wont fix your problem.  Sounds like its something else, which just happens to be more noticable now with a free'er flowing exhaust system.
 
				The factory exhaust manifolds make surprisingly punchy power.. we ran a JMM DEV5 head with the standard manifold for a while, very interesting! 
 _________________ WAG363: AUII LTD Supercharged 363 Dart Stroker [{DESCRIPTION}]  | 
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| jornsmith | 
				
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							changed the leads and plugs aswell as givin the throttle body a good cleanin and presto problem fixed. hope this thread helps anyone else who has this problem						
						
						
								
							 
				
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| kodak | 
				
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							mine is due for a major service soon, will give it a go , thanks						
						
						
												 
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| jornsmith | 
				
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							hey waggin would like to know the results. can you please post to show us all						
						
						
								
							 
				
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