jzzamesb

iTrader: (9)

I've got a 98Z A4 and last year in september it would run consistent 13.5-13.6's with 2.0 60's and just a lid. In november I installed pacesetter lt's, ory, and hooker catback. I took the car to the track last night temp around 50 degrees and ran made three runs. 14.2, 14.4, and 14.6 @ 96-98 mph and 2.2 2.3 60's. I have a couple theories.. After I installed the headers to this day I haven't got a service engine soon light and I deleted air and egr. Makes me think the car has been tuned before I got it. The red check gauges light flashes almost constantly but doesn't stay on. Another thing is the y-pipe banging and some people suggest that it causes knock and retards timing?? Anybody have any ideas?? I'm thinking I probably need a tune.

BIG_MIKE2005

iTrader: (116)

Sounds kinda like the car wasn't running as hard as it should have even before. You should be getting better than 13.5 w/2.0 60' bone stock. And the LT's definetly shouldn't have slown you down. Although your 60' times were worse than before the install & that is gonna effect your time too. I went from a 13.2 to 12.9 after my LT install.

Most people don't require a tune after LT's. Hell I'm still not tuned after my H/C & full exhaust & mine runs perfectly fine. If someone did go in with a handheld tuner prior to you buyin the car that could possibly be effecting you. I say go to the local parts store & have them scan it for codes & find out if there is a problem.

Redlinez

iTrader: (5)

60 FT time is horrible. That added power must be causing some serious spinning. You need some tires and the story should change. I'd also recommend a tune as it might be leaning out up top. Mine did.

jzzamesb

iTrader: (9)

so you all don't think the y-pipe banging would be hindering it any??

Disturbed Bird

iTrader: (9)

get a tune!!!!!

and yes the y pipe banging could cause it to run shitty b/c of the computer thinking its engine knock

slowmofo

iTrader: (6)

Did your MPH change?

A tune may help, although I am still on the stock tune, just deleted air,egr, ect..

Yes your y-pipe can affect knock. Maybe get some poly motor mounts, that will almost eliminate that, there a PITA to put in though.

DANOZ28

iTrader: (1)

running lean, A/F ratio needs a tune. i tell people on the web just adding headers will gain 20 rwhp with a tune. i was told even a 85 mm MAF sensor will lean out your car. get a real tune , i had bad luck with a mail order tune.

jzzamesb

iTrader: (9)

sounds good, I'm gonna try and fix the y-pipe issue and get a tune and see what happens.. Thanks for the input

brad8266

iTrader: (23)

fix the banging y pipe and run a PCM scan at WOT and see if it is logging knock retard.

99SSragtop

Frustration has just begun.........

Demonicbird00

iTrader: (17)

get a tune

blue99fbody

iTrader: (5)

are you sure its not the trans slipping

plaf713

iTrader: (8)

those are pretty bad 60 fts as well, maybe you should work on launching and get a tune

jzzamesb

iTrader: (9)

It used to 60 2.0's consistently before the headers and full exhaust. It has stock 16" street tires. I've tried pre-loading the suspension and launching as well as just stabbing it.

LS1crazy01

iTrader: (14)

I say get some drag radials and a tune and then welcome to the 12's!

Dskeet6

iTrader: (20)

is there any cheap way to fix the y-pipe banging??? maybe bash the part of the y-pipe in where its knocking????

also if you have a flattened style 3'' y would it still bang?

WS6_00

iTrader: (10)

heater hose around the part thats banging the floorboard

c0ncEpT

iTrader: (4)

My car ran slower after LT install also.....The trans started dying

xBROKEx

iTrader: (7)

this may be a given but make sure your trac control isnt engaging

01ssreda4

iTrader: (96)

did you just suggest beating the exhaust? did you used to own a red SS? bc mine looks like the previous owner beat it with a big hammer....over and over and over. whats wrong with you people??? say it with me...YOU DONT BEAT OR FLATTEN EXHAUST, THAT DOESN'T MAKE YOUR CAR FASTER.