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 Old 03-16-2019, 10:55 AM   #1
 
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Default 3" turbo back UR exhaust with no tune

Whats up everyone? i just bought an UR exhaust with a 3" DP that has no high flow cat and a 3" exhaust that has a straight mid pipe. My car is a 2008 speed with Autotech HPFP internals, Corksport TMM, and a Cobb intake and high flow air filter. I was wondering if there was a proper tune for this or if i could just run the car with some basic maps?
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 Old 04-02-2019, 05:31 AM   #2
 
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3” catless downpipe and midpipe will require a tune. You have the hpfp upgrade that is necessary, but that is not enough. You will get really nasty boost spikes as high as 22 psi or more trying to run the stock tune. Fueling under load will not be right, either. Your long term trims will be off and AFR too lean when going wide open throttle. It is not safe.

It will make power, run like a raped ape, right up until you quickly lean out and go boom. You need a stage 2 compatible tune.
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2017 Audi Q5 3.0 T (supercharged) Stage 2, EPL tune, JHM overdrive crank pulley, ZF8 TCU tune, aFe/034 intake, modified air box. 430 hp.

Sunlight Silver '08 MS3 GT Mods: (Sold 1/25/2019 after 10 years of ownership)
BNR Stage 1 (to fix smoking K04 turbo), TurboXS 3" Catless DP/RP "Stealthback" into stock CBE, Vibrant 3 inch Ultra Quiet Resonator in RP section, Magnaflow 3 1/2" exhaust tip, Mazdaspeed CAI w/air straightener and K&N conical filter, NGK 6510 Iridium IX one step colder plugs, Hypertech tune, Autotech HPFP internals, Stock BPV (works perfectly), Yokohama Advan Neova AD08R's (stock size on stock rims); Hawk HPS pads; SURE RMM; Grimmspeed EBCS (2 port mode), Bilstein B6's, SPC rear camber arms.
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