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.

So you have cats on still?

Yup. Still got high flow cats.


11' 370z TT

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.

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.

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

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

High flows?

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

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.

Turbos and backpressure do not like each other.

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.

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.

Where you plan to go for tuning here in Orlando?

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

You could always get dual resonated, but then i dont know how much more power if at all you will make over hfc's.

May pickup a few hp but nothing crazy. Hell just turn up the boost if you want more power but I wouldn't recommend it in this crazy heat..

I thought about going up a few lbs I'm only running 9psi. I try not to drive it in the mid day, I was down in Miami a few weekends ago and had no choice and got stuck at light after light and I'm just watching my oil temp climb. It got as high as 213 which is the highest I've ever seen it. I'm even considering running 20w-50 in the summer haha. It's insane down here


11' 370z TT

My mechanic recommended a guy, I forget his name, but as soon as I get ahold of him I can update the thread and I'll let you know


11' 370z TT

I had the same issue, and I put a spal fan on the oil cooler with a temperature switch. Once the oil goes over 210 or so and I'm sitting in traffic, the fan kicks on. Probably cost less than a hundred bucks and it makes a noticeable difference.

That's a really good idea. Where's your oil cooler located?


11' 370z TT

Between the intercooler and radiator.

A vented hood would make a much bigger difference, but it costs a whole lot more.

I was curious because the best tuners are outside of Orlando. Most of the folks in Orlando deal with Evo's, JZ's and Subaru products. I just had a partial done by MTune ( Mike Adkins ) to put me in a state where I'll be ok till I make it to Bradenton to have Ztuner get me where I want to be. Stock block but I plan now to go for 12psi high boost and 9psi low boost.

I will definitely drive to get a good tune. Hell I'll drive for a good mechanic. The name Ztuner actually sounds familiar I wonder if that's who he was sending me too. Guess I'll find out


11' 370z TT

ZTuner in Bradenton. Harry will be doing my tune as soon as I get a new fuel pressure regulator and put on some new downpipes


11' 370z TT

No Emission Needed in PA under 5kmi/yr
 

So my mechanic said I don't need to have emissions done if I drive it under 5000 miles per year. Anyone else from PA aware of this and capitalize on it?

/Z/