Tuning in a state without emissions

JSur · 07-19-2016, 12:03 PM

My car was last tuned in a state that required inspections and passed making 505whp. Down here where I am now in florida we don't have emissions. Anybody have any input or opinions on what numbers I'll make now that I don't have to worry about passing an emissions test?? Im getting the tune soon and will post the new numbers. I'm just curious and a little impatient haha.

TopgunZ · 07-19-2016, 12:40 PM

So you have cats on still?

JSur · 07-19-2016, 12:43 PM

Quote:

Originally Posted by TopgunZ

So you have cats on still?

Yup. Still got high flow cats.

11' 370z TT

njobe89 · 07-19-2016, 01:49 PM

i don't see you making more hp if you still have the same parts. since you don't have emissions, replace the cats with test pipes and you should make more power.

TopgunZ · 07-19-2016, 02:23 PM

You might pick up like 2hp with test pipes. There isn't a big difference from High flows to test and if you have all the breathing mods done then the returns are diminishing so it wont be anything noticeable.

Chuck33079 · 07-19-2016, 02:24 PM

Quote:

Originally Posted by njobe89

i don't see you making more hp if you still have the same parts. since you don't have emissions, replace the cats with test pipes and you should make more power.

This. It'll be pretty close to the same unless you take the cats out.

Chuck33079 · 07-19-2016, 02:25 PM

Quote:

Originally Posted by TopgunZ

You might pick up like 2hp with test pipes. There isn't a big difference from High flows to test and if you have all the breathing mods done then the returns are diminishing so it wont be anything noticeable.

My tuner told me to expect as much as 5% more if I yanked the cats out of mine and re-tuned.

TopgunZ · 07-19-2016, 02:34 PM

Quote:

Originally Posted by Chuck33079

My tuner told me to expect as much as 5% more if I yanked the cats out of mine and re-tuned.

High flows?

JSur · 07-19-2016, 02:35 PM

To my understanding without emissions I'm able to make the A/F ratio a little richer, which is what causes a car to fail the carbon test no? I was thinking of getting test pipes bit I'm really satisfied with the sound of my car and I'm afraid test pipes will give me more of a raspy sound. Also, somebody mentioned that the back pressure provided by hfc vs test pipes are more beneficial with boost. I'm not too sold on that though

11' 370z TT

Chuck33079 · 07-19-2016, 02:36 PM

Quote:

Originally Posted by TopgunZ

High flows?

Yeah, he assured me it would be a noticable difference. Next time I mess around with the motor, I'll punch out the cats and see if he's right.

Chuck33079 · 07-19-2016, 02:38 PM

Quote:

Originally Posted by JSur

Also, somebody mentioned that the back pressure provided by hfc vs test pipes are more beneficial with boost. I'm not too sold on that though

Turbos and backpressure do not like each other.

TopgunZ · 07-19-2016, 02:44 PM

Well if you decide to go this route of test pipes. There is only one test pipe to look at. Motordyne ART pipes. They sound better than high flows with the way they resonate. I went from Berk hfc to these and the sound actually got just a tad quieter.

TBatt · 07-19-2016, 03:32 PM

Unless I'm way off base, emissions tests are run at part throttle and there should not be hardly any boost at that load so the AFR map should be about the same as a NA engine. There is probably some to gain but I agree with the others, time to make changes if you want the biggest gain.

solidus · 07-19-2016, 03:48 PM

Where you plan to go for tuning here in Orlando?

JSur · 07-19-2016, 04:09 PM

Quote:

Originally Posted by TopgunZ

Well if you decide to go this route of test pipes. There is only one test pipe to look at. Motordyne ART pipes. They sound better than high flows with the way they resonate. I went from Berk hfc to these and the sound actually got just a tad quieter.

I was looking at those not too long ago and that's exactly what I was hearing about them. Only problem is with the resonators, they won't fit underneath because of where the turbos sit. I was kind of upset lol

11' 370z TT

07-19-2016, 12:03 PM	#1 (permalink)
JSur Base Member Join Date: Mar 2016 Location: Orlando Posts: 84 Drives: 2011 370z TT Rep Power: 9	Tuning in a state without emissions My car was last tuned in a state that required inspections and passed making 505whp. Down here where I am now in florida we don't have emissions. Anybody have any input or opinions on what numbers I'll make now that I don't have to worry about passing an emissions test?? Im getting the tune soon and will post the new numbers. I'm just curious and a little impatient haha.

07-19-2016, 12:40 PM	#2 (permalink)
TopgunZ A True Z Fanatic Join Date: Jun 2012 Location: Minneapolis Posts: 2,651 Drives: 06 350Z , 09 370Z MT Rep Power: 6833	So you have cats on still? __________________ ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

07-19-2016, 01:49 PM	#4 (permalink)
njobe89 A True Z Fanatic Join Date: May 2014 Location: Atlanta, GA Posts: 5,227 Drives: 2013 370z BS 6MT Rep Power: 174283	i don't see you making more hp if you still have the same parts. since you don't have emissions, replace the cats with test pipes and you should make more power. __________________ 2 plus 2 times 2 = ? ... hint, it's not 8 Stillen CBE, Stillen Gen 3, TP's, Uprev tuned - 324whp/264tq

07-19-2016, 02:23 PM	#5 (permalink)
TopgunZ A True Z Fanatic Join Date: Jun 2012 Location: Minneapolis Posts: 2,651 Drives: 06 350Z , 09 370Z MT Rep Power: 6833	You might pick up like 2hp with test pipes. There isn't a big difference from High flows to test and if you have all the breathing mods done then the returns are diminishing so it wont be anything noticeable. __________________ ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

07-19-2016, 02:44 PM	#12 (permalink)
TopgunZ A True Z Fanatic Join Date: Jun 2012 Location: Minneapolis Posts: 2,651 Drives: 06 350Z , 09 370Z MT Rep Power: 6833	Well if you decide to go this route of test pipes. There is only one test pipe to look at. Motordyne ART pipes. They sound better than high flows with the way they resonate. I went from Berk hfc to these and the sound actually got just a tad quieter. __________________ ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

07-19-2016, 02:35 PM	#9 (permalink)
JSur Base Member Join Date: Mar 2016 Location: Orlando Posts: 84 Drives: 2011 370z TT Rep Power: 9	To my understanding without emissions I'm able to make the A/F ratio a little richer, which is what causes a car to fail the carbon test no? I was thinking of getting test pipes bit I'm really satisfied with the sound of my car and I'm afraid test pipes will give me more of a raspy sound. Also, somebody mentioned that the back pressure provided by hfc vs test pipes are more beneficial with boost. I'm not too sold on that though 11' 370z TT

07-19-2016, 03:32 PM	#13 (permalink)
TBatt Premium Member Join Date: Apr 2013 Location: Huntsville, AL Posts: 832 Drives: 2019 GT-R Rep Power: 20168	Unless I'm way off base, emissions tests are run at part throttle and there should not be hardly any boost at that load so the AFR map should be about the same as a NA engine. There is probably some to gain but I agree with the others, time to make changes if you want the biggest gain. __________________ RJM pedal, Hotchkis Sway Bars, FI TDX, FOG Light, Z1 Slotted Drilled rotors, Stillen SC, Quaife ATB, Z1 Oil cooler, AEM Gauge Set, Galeforce gauge mount, Avant Garde M590 Hypersilver w/RE-11, TopgunZ A2A kit., ECUtek tuned by Seb: ROLL TIDE!

07-19-2016, 03:48 PM	#14 (permalink)
solidus Track Member Join Date: Oct 2014 Location: Orlando, Florida Posts: 694 Drives: 15' Nismo Black 6MT Rep Power: 10080	Where you plan to go for tuning here in Orlando?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Fast Intentions HFC and State Emissions Test	Rangerz	Intake/Exhaust	2	06-29-2014 03:27 PM
3000 GT VR-4 Need some emissions help please	Rangerz	Other Vehicles	5	02-09-2014 05:55 PM
Black Friday Tuning Tuning Specials at R/T Tuning	Erik@RTTuning	Drivetrain/Engine	0	11-23-2012 01:46 PM
emissions	iron1mike	Intake/Exhaust	12	05-19-2012 09:03 PM
CA Emissions	mtiker	Nissan 370Z General Discussions	3	02-25-2011 10:00 AM