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i have a stock NA se-r,i've read about people going as big as 2.5" pipe so naturally i want something different.is 3 " pipe from the cat to big? Will this make for too little back-pressure?my plan is to run the 3" and a single chamber flowmaster,but i wanted a few opinions first to see if anyone has tried this
i have a stock NA se-r,i've read about people going as big as 2.5" pipe so naturally i want something different.is 3 " pipe from the cat to big? Will this make for too little back-pressure?my plan is to run the 3" and a single chamber flowmaster,but i wanted a few opinions first to see if anyone has tried this
Before we can give you a correct answer, we need a little more info:
1. What mods do you have now?
2. What are your HP/TQ goals?
3. What other engine mods do you plan on getting in the future?
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Vehicle:1995 Dark Green Infiniti G20 Real name:Howard Wright Current mods:91 intake cam at 19* degrees, TopSpeed header, M3-style rear wing, P11 rims, *Recaro LS-L seats* I.C.E.:Pioneer DEH-P6800MP CD/MP3 HU, Audiobahn AS65Q 6.5" components in front & back....HELLZ YEAH!!!! "THOU SHALT NOT MOD THAT WHICH THY CANNOT MAINTAIN" -thus speaketh Mr. Ryte
if ur stock the way u say u are, just get 2.5 all the way back with a nice muffler, truthfully, what would help u the most is just getting rid of ur cat, putting an exhaust on a stock se-r is a waste of money imo, waste that money on some pulleys a good intake/ header or nos.
completely stock,as far as horse power--who knows,its just a daily driver playing on a budget but i want to do the the turbo addition sometime next year
There are almost no gains by removing the cat on an NA SE-R, plus you will just be polluting more. Just leave it in. What is peoples obsession with being different. Whey not go with a .5 inch exhaust, that'd be different.
There is no such thing as not enough backpressure. If you have stock cams, somewhere between 2.25 and 2.5 is what you want. If you have big cams, and say a gen6 header, then you will want a 3 inch exhaust.
yes, mpg is right, removing the cat wont gain any horsepower, maybe .1, for N/A with mild bolt ons 2 1/4 -2 1/2, is good, with big cams and higher compression 2 1/2 or 3 inches if your brave and the cops arent asses in your area
if you are certain that you are going to be using nitrous or turboing your car in the future, then a 3 inch exhaust should be on your list,
__________________ Project Shift_Rebirth
Change is Inevitable I create my own path, i dont follow others
thanx for the help,kinda new at this "rice " thing, my last play toy was a big block ford
Please, PLEASE, don't do "rice".....
Either do it right or don't do it at all. If you want to start out right, first get either the OBX or TopSpeed header. As for the rest of the mods, do little more research to see what's the best(and not so best) mods.
Again, not knocking you, but if you're gonna mod your car, do it right the first time.
^ i think you missed his point...anyone coming from a domestic perspective will look at us as rice. even if your car is only modded performance wise its still a ricerocket to any nonimport driver.
Flowmaster is, unlike it's V8 applications -gonna sound like ass on your 4CyL.
A friend of mine had flowmaster muff on his car. holy cow did it sound like sh*t
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2K2 SE 6 speed Grey Lustre SE Every option minus navi, black leather, HLSD, Hotshot headers, Cattman Catback, Frankencar WAI, HP autoworks STS, ES motor mount inserts, ES shifter bushings, FSTB, RSB. JIC FLA-1 coilovers, A34 Brakes Hawk HPS pads, 18” Voxx wheels, Toyo 4s, 54,000 original owner miles.
yep, flowmasters are garbage, chambered mufflers are no longer cutting edge(heck neither are carburetors..did I spell that right?).
On a N/A 2.0L engine, 3" is WAY TOOO BIG!! even with a header, cams, etc, etc.
Take this example: I dynoed a '98 integra type R stock, then with no intake at all on the throttle body (no MAF sensor on those cars). Well, you say " so no intake flowed better, so it probably gained some Hp right?" No my friend, it fell on its face, lost about 12 Hp. The same principle applies to exhaust on a N/A car -just because something may flow more volume, doesnt mean that it will work better. WIth a bigger diameter pipe, your exhaust gas velocities drop way down, reducing the scavanging effects. Mike Kojima (Nissan master Guru) has written about this and I think you will find that he would agree. I would not go over 2.5", maybe 2.25 or so.
If the car has forced induction, then that is a different story...bigger is better! Ever seen a civic with 4" full turbo-back exhaust? I have, and it runs in the low 10's. Had to shop around the diesel trucking industry to find the mandrel bends he needed.
There is no such thing as not enough backpressure. If you have stock cams, somewhere between 2.25 and 2.5 is what you want. If you have big cams, and say a gen6 header, then you will want a 3 inch exhaust.
I beg to differ... with too little backpressure, the EGR will not operate properly. Trust me, it's happened to me. My car will not pass NoX without a restrictor plate in front of the cat with a half inch hole in it! And that was after SEVERAL knowledgeable SE-R people offered help, suggestions, and advice... to no avail.
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kieran
95 200SX SE-R track car, 02 Maxima SE, 08 FX45, 08 G37
sorry if i offended anyone with the "rice" comment, i know what rice truly is,the pep boys hotrods, i was just makin' a funny----- i know,not funny,my car want be going that route. so sounds like the 2.5 pipe and a magnaflow are the way to go. im trying to learn as much as possible about these cars, plus ive got the hookup b/c my wife works for a local Nissan dealer - unfortunatley i work for Mitsubishi in the parts dept.but if i can ever return the favor just hit me up
I am currently running a 40 series flowmaster and yes it sounds like sh*t. Idle sounds bad ass and cruisn at 4000-4400 other than that no good at all
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SR20 1320 Racing
SR20DEN Up N runnin 1.64 60ft 11.8@119 Direct progressive 50SHOT 1ST,2ND-100SHOT 3RD,4TH
ALLNITROUSENTRA
and a little bit of compression
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