Probably the best and most sensible advice I have been able to find. Thank you for this video and your time ! Probably saved me a couple grand on my navigator I mainly just daily drive

Oh I was just looking for this. Thank y’all

Awesome tips as usual! No pun intended :)

I love it my guys zzp keep up the work and I love the video and I wish you guys make a exhaust for chevy trax ls sport 2018 be good 💯💯💯💯💯💯💯

After my 2nd time seeing this... this was a BIG help!!! I'm keeping all 3 with limited to no raspy exhaust sound! Thanks!

I have a shorty header w/catless 3inch to 2.5 to shorty resonator to 2.5 back. I used to have a zzp muffler but I blow them out in about a year and a half with all the fossil popping it does. I went with a fx flowmaster....and it sounds waaaaay to loud. The shorty warped and cracked the primaries, I welded it up but I still need to go back and find the leak. I will probably get another shorty header and cut the flange so it doesn't warp again and ride that for another 3 years lol. ......maybe another muffler from you as well, they have a great sound. Lsj.

Im still tryna quiet my 3800 just a lil more.....thinking about that 3" resonator from ZZP .....I think it 24" or 30" long but is should work👍

so much info in such a short video.

For me with out resanator and muffler sounds great its all depend your tasted

Cheers man. This helped me a bit in my exhaust build for my Harley Night Rod Special. 1250cc with 126 rwhp ish, 86 ft lbs peak torque at 7k rpm. Redline at 9k. Went with 2" headers stepping into 2,125" that then merge into a collector with 2.5" outlet into a 17" long muffler with perforated core and reversion cones. Seems reasonable?

I literally bought the 3" LNF exhaust with the resonator and muffler yesterday...that better be the best :)

RyanDeez and ZZDeez here guys.

Dang thanks for the info. I have a cruze that I am doing a mid build. And good to know to keep it 2.5 exhaust.

Knowing the original stock diameter of my 2002 GTP cat back exhaust would be a great help in determining which changes would compliment the engine modifications I’ve done so far. I already have a Random Technology down pipe, high flow cat and U-bend replacement. Could I please get an expert reply from ZZP ? Thanks 🏁.

It currently has oem sized 1-3/4 but I would like to know if the 2.25 inch sized exhaust, be good with the N/A 2.2L Cobalt, from just after the cat to the muffler, without negative effects and without needing tune ? Thanks in advance.

I have a Nissan 350z 2008 VQ35HR with stock header manifold, Kinetix hfcs with the o2 extender bung, and a Top Speed Pro1 dual exhaust. I was thinking about installing Tomei headers or maybe Z1 headers on my car and was wondering whether I would get a check engine light or not if I do?

What are your views on thr nissan z coming with small pipes? And doing a step up ? So most of my system is 2" theres a resonator and after the axle back is 2.5" no exhaust ....

I'm doing an na build to super charge on my l36 3800 down the road. Love these tips

I have a 2017 Honda Civic 1.5 L turbo, I can’t decide wether to get the 3 inch or 2.5, I do however want to get a high flow cat downpipe, but to go with that none of the big name exhaust systems sound good to me, what do you think would sound the best

Would you reccomend a 2.5” for a b18c civic that’s turbo? Looking to break 300hp but obviously it has a pretty small displacement, kinda feel like I’m stuck in the middle looking at exhausts. Most forums say shoot for the 3” or you’ll choke the turbo, but I would prefer not to make my cul de sac of old suburban neighbours mad at me😬

I have a magnaflow catback with a 2.25 inch diameter pipe with a 3 inch dual exit

Will a smaller exhaust tip say from 2.5 inch down to 1.5 inch restrict the sound and power?

I have a mercedes c250 and I want to upgrade my exhaust system. It's a 4 cylinder turbocharged and I've done some mods for now and want to keep adding more power. What set up would you recommend?

I have a mazda 3 with stock lines 1.5 what do you recommend to sound the best?

New sub.

thanks for talking sense into some of these embarrassing folk out there.

Hi bro plz help me out. I’m wondering about my V6 challenger I wanna install 3inch X pipe with 2.5 fox mufflers. What do you think about it? Plz reply to me

Hello mate ihave a plan to replace my down pipe and mid pipe in 2.8 litre engine what inch should i take. 2.5 inch or 3 inch? Thanks.

What about a 2017 q50 3.0t awd? Right now I'm looking to go 2.5

I Have a 1.8 single cam engine and what I did is I put a 2.5 inch exhaust system and 2 inch header, no cat converter. Is that ok?

Hey man ,I've gota ford falcon g6 4 cylinder turbo /ford FG ecoboost and I have no idea what exhaust to get ,can you help me out please ? Thanks 👍

Waiting for the Ecotec LSJ long tube headers to be back in stock 😁

Do you have the special order a 3" for A350Z with twin turbos

What does that red car have as a exhaust, sounds good?

What the best for e55 amg 3 inch or 2.5

I've been wondering how much we can actually alter the specific sound of a car's exhaust with various alterations. Like, I got a Focus ST to be one of my daily driver but... It's a bit boring and far too quiet for my liking. I'd like to compare the difference (if any exist,) between running a 2.5" pipe after my rear muffler (about 2' long) and. 3" pipe at that location. Not a concern with all is wlñd

2.5 is necessary for N.A. cars. 3+ is good for power added exhaust

Hello there, would it be okay if i use 2.5 inch for the pipe but then for the muffler part i use 3inch? I’m having just a lower power car around 150hp. And would you recommend if i wanna do valvetronic exhaust system? Thankyou for your time, looking forward to get a reply from you soon!

I’ve seen 600 hp V8 running 2.5” exhaust. Why the need for 3” on a 300 hp 4 cyl? I have a sonic and am not bashing. I’m just wanting to know. I’m currently running 2.5” and if I need to increase for more gains in the future I will.

How you fight drone in 3" exhaust, turbo car 500hp

Opinions on a ls1 410rwhp 2.5 vs 3.0 anything think it's worth upgrading to 3 inch? Also has 125hp nitrous so with that runs just over 500rwhp

Have a c63 amg 6.3l 520 hp And 440 tq Do you think I should do 3 in just tuned and highflow cats

straight piping my honda civic les goo 3inch pipe

I’ve got a 2013 scion tc the factory exhaust is 2” I plan on getting 2.5” exhaust (Megan racing drift spec). After watching this video I now have a better understanding of exhaust sizes but I just wanna make sure that it’s ok to get that exhaust does anyone know for sure?

So on the 3800 with the XPZ cam, 3.0 pulley, 42.5# injectors, ebay headers and 3" catless dp , on 91 octane. I was thinking 3" since ive got a 3" dp, what size catback would you recommend? I have no idea what to expect power wise out of this build. Maybe 300hp?

Am looking into doing a 2.5 exhaust for my cobalt

What you recommend I go with on a 2002 BMW 745i 7series????

I have a question. I have an '09 Silverado with the 5.3L; it is a true dual with 2.5" exhaust all the way back with a pair of flowmaster 40 series. I would like to put a pair of flowmaster outlaws in their place with 3" inlet and outlet and have 4" x 18" tips. My question is: Would it be better to run 2.5" or 3" pipes with my motor?

my 2005 BMW 330CI has a stock 2.25 DUAL piping exhaust. Would a Single 2.5 inch pipe be sufficient? Car only has 225hp. thanks

My car makes 210hp at the crank, by the end of it, id like to be at 210whp. 2.5" good enough or will 3" help me get there?

I like to compare exhaust size to how big the opening of your mouth is for when you exhale for exercise. For example, if you bench, you gotta find the sweet spot so you can give proper power while exhaling or else you’ll be too short of breath or you start suffocating bc your not properly breathing well enough

I have a 5.0 genesis

Quien fabrica estos escapes para 3800

How about a 200hp engine.what size do you propose.2 in?

I have a 2.5 DNA Motoring Cat-Back Exhaust System for my 09 Cobalt LT sedan but Im still lookin to see what downpipe would fit best for my car

how much did it cost to put that hood vent on that ats?

i got bought your 3in cat back for my new sonic because yes the straight piped 4banger is annoying as hell and i don't care about the loss of low end power

Is buying a cobalt 2005 for 3000 good? 130000 miles

Does having too large a pipe have any negative impacts on the engine I.e. back pressure?

Can you show about calculations part

I have a 04 monte carlo ls and I'm really trying to figure out the difference between the zzp and magnaflow as far as performance and why the magnaflow cost so much more??

2.5" is great for sound, but zero power gain. If you want sound AND increased hp, get the 3" and find a shop that knows how to tune or it will drone.

What about Chevy 350 TBI?

Here is a LNF Cobalt with High Flow Cat, Resonator, and Muffler. kzfaq.info/get/bejne/msmIn7KF09HUZY0.html

How about for a 2.4liter turbo diesel engine with 200 whp? 2.5 vs 3in?

So does the 3 inch is better

Zzp you hardly ever answer emails.

What’s size for a g35 coupe n\A

99% of the time your exhaust is too big. The guys at the exhaust shop dont have a clue what they are doing. The best perforrming exhaust is headers with small primaries and a small size exhaust. On a naturally aspirated nothing over 2.5 inch and in most cases thats way too big

زبدة المقطع أنت فقط تحتاج لاختيار المقاس المناسب لسيارتك . الجزء الأول : 2.5 إنش الخيار الأمثل لسيارات الأقل من 300hp . يقول الشخص الذي في المقطع ، بأنه عند قيامك بتعديلات على السيارة لست بحاجة إلى 3 إنش ؛ لأنه سيضعف أداء السيارة و صوت مزعج ، و ستلاحظ ضعف واضح في الأداء أثناء سير السيارة . الجزء الثاني : 3 إنش الخيار الأمثل لسيارات الأكثر من 300hp . يقول الشخص الذي في المقطع ، بأنه عند قيامك بتعديلات على السيارة و بدأت تزيد عن 300hp الأفضل الانتقال إلى 3 إنش ، هنا بيكون في زيادة في أداء أكثر . ملاحظة من الشخص ، أصحاب محركات lsj السيارة لما تكون straight pip (يعني ما فيه دبات تلوث ما فيه شيء ، من المكينة للشارع)بيكون صوتها ليس جميل ، الأفضل تركب لها ثلاث أشياء (resonator) و (muffler) و (high flow cat ) وشكرًا أتمنى أن كل شيء قلته صح و أي ملاحظة ما انتبهت لها أو شيء غلط صحح لي بتعليق (غير كذا لا تعلق) (أستبدل كلمة شكرًا بلايك(👍) فقط ، عشان ما تكثر الرسائل ع الفاضي) وشكرًا لحسن قراءتك و الله ولي التوفيق

Of course they sound like shit with 3inch exaust there v6 not v8