Some vehicles are getting some sort of power cut in 1st/2nd when at WOT. It's presumed this is something in the ECU taking action to limit torque. This is on 91, 93, and 95 octane - so not octane related.
So for someone who rarely peaks much past 4k rpm's, this would be a reliable option? I noticed that my 2.0 seems to rev a bit more freely and quicker with the Borla Touring Climber cat-back. The mishimoto intercooler pipe and intake have caught my eye, but reading here has me thinking that a tune is needed to really benefit from the hard parts. I wouldn't want anything crazy and risk burning up the engine quicker, but an extra jolt in the pants would be nice. I think there's also a better blow off valve, but can't remember the company.
Technically referred to as a diverter valve: https://madnessautoworks.com/jeep-wrangler-jl-diverter-valve-20l-go-fast-bits-gfb-dv-12082
Yup, that's the one! Had GB+ popping to mind, but was pretty sure that wasn't right. Thanks buddy!
Turbo tuning parts tend to fall in two categories, flow (catless DPs for example) and keeping pressure (charge pipes, upgraded DV/BOV). You probably won't see any real gains from the latter, especially without a tuner, but they allow you to crank up the boost without leaking.
I've got a lot of years as a mechanic under my belt, but all of it was pre computer and never on the the performance end of things, so I'm a baby in the woods with tuning. I never personally hooked a laptop to a truck or piece of equipment, and the nearest thing to a computer in that shop was a fax machine. I'll also admit that I get spun around in these threads, but still have an interest. One thing I definitely picked up from you guys is that without a tune, there's not much point in dropping about $1k in bolt-ons without adding a tuner. I did add a straighter flowing 2-3/4" cat-back, that feels like it helped the engine climb the tach with more ease, but ground clearance was my main reason for that swap.
I don't know about New York, but I also live in a CARB state. The way I see it you have three options for aftermarket parts:
My inspection guy runs a by the books type of shop, so he doesn't do blub stickers and I wouldn't ask him to. As long as the cel is unlit, all sensors are reading, lights work, horn works, brakes are good, and the front windows aren't tinted it goes through. It's usually done in about 20 minutes and he's never popped the hood, so as long as I leave the cat alone and the o2 sensors are happy, I'm confident that I can do whatever else and it wouldn't blip the radar. If I can get some decent low and mid gains with the stock downpipe and cat, I'll start collecting the underhood bits.
So this wasn't you?
I think you did the one of the few mods that makes sense without a tune. For sound and ground clearance!
I don't remember a year I haven't had a vehicle without a CAT pass emissions here in NY, multiple different locations as I don't have a "guy". I have the CEL tuned out and the only way to know is via visual inspection and maybe your sniffer but NY doesn't do that, most of the time these are car guys and as long as you don't have anything else unsafe they turn a blind eye IMHO.
And this is where it isn't worth it for you. The gains come from beyond here. Now you may slightly benefit from an ECU tune(Which on this platform means you replace the ECU with a new one that is "cracked" to accept changes) but the JB4 is a piggy back system which just fools the stock ECU.
First off, that picture is funny as hell!So this wasn't you?
I think you did the one of the few mods that makes sense without a tune. For sound and ground clearance!
I don't remember a year I haven't had a vehicle without a CAT pass emissions here in NY, multiple different locations as I don't have a "guy". I have the CEL tuned out and the only way to know is via visual inspection and maybe your sniffer but NY doesn't do that, most of the time these are car guys and as long as you don't have anything else unsafe they turn a blind eye IMHO.
And this is where it isn't worth it for you. The gains come from beyond here. Now you may slightly benefit from an ECU tune(Which on this platform means you replace the ECU with a new one that is "cracked" to accept changes) but the JB4 is a piggy back system which just fools the stock ECU.
I love spending other peoples money thou so if you need positives reasons, let me know, I'll give you a bunch! As you said you are comfortable with turning it up as long as the engine is still healthy and well in the Alfa platform they are pushed pretty hard with good results! Albeit they have a different head design...
Here in PA you need to pop the hood on most cars as the battery needs to be properly secured. You'd be amazed how people think a bungee cord is what they think is good enough.
New York is very strict on emissions. As long as everything else is in good functional condition. Although, going by the book, a vehicle can still pass with the abs light lit if the brakes are otherwise still functioning properly.
Yes, we discovered that when I'd go over to my neighbor's place on a near-weekly basis to extinguish the CEL light on his Dodge Dakota. He was chasing a fuel system error code that was eventually and correctly identified, but not before replacing a few parts that didn't themselves require replacement.
