ripped_fear Posted February 26, 2015 Author Share Posted February 26, 2015 Graham I know the thread you mean but most the links are dead now. The problem with the wifbitz one is I don't like the tip. I dont like the way it tapers in inside. I know I'm being picky. Ash that would be great mate I managed to source the wifbitz 2.5" after some hard work. So mine would be slightly quieter. Let me know mate. Quote Link to comment Share on other sites More sharing options...
mattdavies Posted February 26, 2015 Share Posted February 26, 2015 Blitz Nur Spec with Bung ? Quote Link to comment Share on other sites More sharing options...
Nic Posted February 26, 2015 Share Posted February 26, 2015 Thanks for the recommendation on exhaust Nic but sourcing one of those for a reasonable price would be hard I should imagine. Adding an addition silencer may be the route I take, any reason you would advice a silencer over a high flow catalytic converter. Getting an additional silencer welded into the mid pipe of your current exhaust would probably be your cheapest option, I did this with my Blitz NUR R using a stainless steel Jetex silencer http://www.jetex.co.uk/silencer Just noticed that Kakimoto also do a twin box exhaust specifically for the 2JZGE http://www.nengun.com/kakimoto-racing/full-mega-n1-rev http://www.kakimotoracing.co.jp/image_t31314.html http://www.kakimotoracing.co.jp/movies/toyota/t31314_jza80-na.wvx Quote Link to comment Share on other sites More sharing options...
David P Posted February 26, 2015 Share Posted February 26, 2015 (edited) I have spent a lot of time playing with exhaust systems on N/A's and found that an Autobahn 3" outlet manifold, no cats, 3" mid-pipe and a 3" HKS Silent Power system, with an OE ECU, actually reduced the power. The noise created was beyond imagination of even the most lunatic Young Petro Buck and the acoustic vibrations inside the car could probably literally shake out your fillings, after it had first sent you deaf and your neighbours insane! For whatever reasons; N/A engines definitely sound and appear to go better/best and be "happiest" with a 2.5" exit manifold, no cats and a 2.5" exhaust system. I have edited your option 2 to clarify. "Option 2: OBX manifold, 2.5" custom mid-pipe with high-flow 2.5" cat-back exhaust with 2 straight-through resonator-silencers located as far back in the system as can be, exiting via a 2.5" tailpipe." Don't be tempted to use a large-bore tailpipe, because normally/aspirated G.E. engines really don't "like" it and it makes them sound "pants". A Whifbitz 2.5" mid-pipe and 2.5" cat-back 2-box exhaust system would get my vote. I'm not sure of the tailpipe size on one of those, but it's simple enough to change. Edited February 26, 2015 by David P (see edit history) Quote Link to comment Share on other sites More sharing options...
Ash808 Posted February 26, 2015 Share Posted February 26, 2015 Bit of a ball ache, garage phoned up, won't fit the decat, says it must have a cat Quote Link to comment Share on other sites More sharing options...
ripped_fear Posted February 26, 2015 Author Share Posted February 26, 2015 (edited) Blitz Nur Spec with Bung ? Would love one but on an NA just going to be far to loud, and a bung defeats the point, would rather just get one that works as I want straight out the box. Getting an additional silencer welded into the mid pipe of your current exhaust would probably be your cheapest option, I did this with my Blitz NUR R using a stainless steel Jetex silencer http://www.jetex.co.uk/silencer Just noticed that Kakimoto also do a twin box exhaust specifically for the 2JZGE http://www.nengun.com/kakimoto-racing/full-mega-n1-rev http://www.kakimotoracing.co.jp/image_t31314.html http://www.kakimotoracing.co.jp/movies/toyota/t31314_jza80-na.wvx Thanks another to consider, I fear another very rare part though. I have spent a lot of time playing with exhaust systems on N/A's and found that an Autobahn 3" outlet manifold, no cats, 3" mid-pipe and a 3" HKS Silent Power system, with an OE ECU, actually reduced the power. The noise created was beyond imagination of even the most lunatic Young Petro Buck and the acoustic vibrations inside the car could probably literally shake out your fillings, after it had first sent you deaf and your neighbours insane! For whatever reasons; N/A engines definitely sound and appear to go better/best and be "happiest" with a 2.5" exit manifold, no cats and a 2.5" exhaust system. I have edited your option 2 to clarify. "Option 2: OBX manifold, 2.5" custom mid-pipe with high-flow 2.5" cat-back exhaust with 2 straight-through resonator-silencers located as far back in the system as can be, exiting via a 2.5" tailpipe." Don't be tempted to use a large-bore tailpipe, because normally/aspirated G.E. engines really don't "like" it and it makes them sound "pants". A Whifbitz 2.5" mid-pipe and 2.5" cat-back 2-box exhaust system would get my vote. I'm not sure of the tailpipe size on one of those, but it's simple enough to change. This is what i have heard while searching too hence my choice to go for a 2.5", interesting about the bore size at the tip though. Not sure what my current one is but its rather small by some standards but I personally think its about right. Would have to measure though to find out exactly. However I have no intention to go for a massive 5" back box so should be ok. Maybe I will have to re-consider the Wifbitz exhaust then. Its certainly on the short list so far. EDIT- turns out they only do 3" upwards. Bit of a ball ache, garage phoned up, won't fit the decat, says it must have a cat Damn! Why dont you fit it yourself matey? Edited February 26, 2015 by ripped_fear (see edit history) Quote Link to comment Share on other sites More sharing options...
Graham1984 Posted February 26, 2015 Share Posted February 26, 2015 Graham I know the thread you mean but most the links are dead now. The problem with the wifbitz one is I don't like the tip. I dont like the way it tapers in inside. I know I'm being picky. That is picky I never really looked at it tbh. It is a hell of a lot cheaper than others you will get though and personally I would be careful to what you choose, when you go full decat it can be ear splitting loud. When I went decat I had a Kakimoto exhaust that David P posted. By the time I had driven back from Crawley to my house I had a migraine. Quote Link to comment Share on other sites More sharing options...
ripped_fear Posted February 26, 2015 Author Share Posted February 26, 2015 That is picky I never really looked at it tbh. It is a hell of a lot cheaper than others you will get though and personally I would be careful to what you choose, when you go full decat it can be ear splitting loud. When I went decat I had a Kakimoto exhaust that David P posted. By the time I had driven back from Crawley to my house I had a migraine. I know. Im trying to find the thread that had alot of DB readings of a variety of different exhaust, but I cant find it. One problem I have with the wifbitz exhaust is its only available with a 3" upwards pipework. And I can actually get the silnet power for cheaper than the wifbitz one but unsure on the DB differences. (Also via Paul) Did yours have a wifbitz exhausts on it? If so do you have any shots/ videos? Quote Link to comment Share on other sites More sharing options...
Graham1984 Posted February 26, 2015 Share Posted February 26, 2015 No mate I don't have any videos. It was subtle for town and better when hooning it. My catback is a 2.5, I'm not sure whats going on really as their decats are now listed as three inch too Quote Link to comment Share on other sites More sharing options...
ripped_fear Posted February 26, 2015 Author Share Posted February 26, 2015 No mate I don't have any videos. It was subtle for town and better when hooning it. My catback is a 2.5, I'm not sure whats going on really as their decats are now listed as three inch too They no longer stock 2.5" decats maybe they dont stock the exhaust either. No-one caters for NA's its so fustrating. Quote Link to comment Share on other sites More sharing options...
Graham1984 Posted February 26, 2015 Share Posted February 26, 2015 They no longer stock 2.5" decats maybe they dont stock the exhaust either. No-one caters for NA's its so fustrating. That's what I don't get though, as why change their own decats and exhaust system size by that amount? Looks like you will just have to go 3" now then. Quote Link to comment Share on other sites More sharing options...
ripped_fear Posted February 26, 2015 Author Share Posted February 26, 2015 That's what I don't get though, as why change their own decats and exhaust system size by that amount? Looks like you will just have to go 3" now then. You say that but i found a nearly knew 2.5" wifbitz de-cat. If needs be I will buy second hand. Do you have any pictures of the rear of your car to show how the exhaust sat? There really is a gap in the market for some nice NA items. Quote Link to comment Share on other sites More sharing options...
Graham1984 Posted February 26, 2015 Share Posted February 26, 2015 You say that but i found a nearly knew 2.5" wifbitz de-cat. If needs be I will buy second hand. Do you have any pictures of the rear of your car to show how the exhaust sat? There really is a gap in the market for some nice NA items. I don't mate. I'm terrible for taking pictures. I have photo's from holidays 5 years ago that will never see the light of day. Quote Link to comment Share on other sites More sharing options...
ripped_fear Posted February 26, 2015 Author Share Posted February 26, 2015 I don't mate. I'm terrible for taking pictures. I have photo's from holidays 5 years ago that will never see the light of day. lol no worries. Quote Link to comment Share on other sites More sharing options...
David P Posted February 26, 2015 Share Posted February 26, 2015 Here's a new 2.5" N/A midpipe, it comes with a free T.T. first decat pipe. http://www.ebay.co.uk/itm/TOYOTA-SUPRA-MK4-JZA80-92-02-STAINLESS-STEEL-EXHAUST-DOWNPIPE-1ST-DECAT-PIPE-/181107598561?pt=LH_DefaultDomain_3&hash=item2a2adaa4e1 Quote Link to comment Share on other sites More sharing options...
ripped_fear Posted February 26, 2015 Author Share Posted February 26, 2015 As above, I have the first and second decats David. both 2.5" and ready to go. Its just the Back box I need now. Quote Link to comment Share on other sites More sharing options...
Ash808 Posted February 26, 2015 Share Posted February 26, 2015 (edited) Damn! Why dont you fit it yourself matey? If I had the tools and knowledge I would mate, pain in the ass, they are now going to repair the cat and put ur back on, so I've got the 3" decat still, do I keep or send it back Edited February 26, 2015 by Ash808 (see edit history) Quote Link to comment Share on other sites More sharing options...
ripped_fear Posted February 26, 2015 Author Share Posted February 26, 2015 If I had the tools and knowledge I would mate, pain in the ass, they are now going to repair the cat and put ur back on, so I've got the 3" decat still, do I keep or send it back Just a socket set needed I would think mate. Havent done it myself. Quote Link to comment Share on other sites More sharing options...
Ash808 Posted February 26, 2015 Share Posted February 26, 2015 Just a socket set needed I would think mate. Havent done it myself. Think so, I've got the jack and stands so I mite have ago Quote Link to comment Share on other sites More sharing options...
Morzy2k5 Posted February 26, 2015 Share Posted February 26, 2015 I'm runing a full double Decat and 3.5" kakimoto system with a 5" tip on my na...it is incredibly loud even though it has a centre box.but it sounds ace so I'm not bothered lol.dont worry about noise too much Quote Link to comment Share on other sites More sharing options...
David P Posted February 26, 2015 Share Posted February 26, 2015 As above, I have the first and second decats David. both 2.5" and ready to go. Its just the Back box I need now. Keep your eye on the for sale page, there will be one come along, 2.5"s go for less dosh than 3" too. Ask Keron, you might get lucky? Quote Link to comment Share on other sites More sharing options...
ripped_fear Posted February 26, 2015 Author Share Posted February 26, 2015 Think so, I've got the jack and stands so I mite have ago Come over mine I you want mate I could help you fit it and you could help fit mine Quote Link to comment Share on other sites More sharing options...
ripped_fear Posted February 26, 2015 Author Share Posted February 26, 2015 I'm runing a full double Decat and 3.5" kakimoto system with a 5" tip on my na...it is incredibly loud even though it has a centre box.but it sounds ace so I'm not bothered lol.dont worry about noise too much I am worried mate, I would hate driving the car if it was stupid loud. Quote Link to comment Share on other sites More sharing options...
ripped_fear Posted February 26, 2015 Author Share Posted February 26, 2015 Keep your eye on the for sale page, there will be one come along, 2.5"s go for less dosh than 3" too. Ask Keron, you might get lucky? Yeah will be looking out. Although the hks for the Na may sound like it will do the job. Low db according to the website and 2.5". Plus twin box. Would just like to hear one first. Quote Link to comment Share on other sites More sharing options...
Ash808 Posted February 27, 2015 Share Posted February 27, 2015 Come over mine I you want mate I could help you fit it and you could help fit mine Could do mate, I'm busy this weekend so its a no go + I haven't got my car back (yet) today, let us know when it's ur weekend off and il pop on over Quote Link to comment Share on other sites More sharing options...
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