walkerstrider Posted June 7, 2014 Share Posted June 7, 2014 What power increase can I expect on a jspec n/a if I remove the second decat? Already got a straight thru 3 inch cat back exhaust fitted and a ram air filter. Also what else would I need to do to reach bpu? Quote Link to comment Share on other sites More sharing options...
Al Massey Posted June 7, 2014 Share Posted June 7, 2014 To reach BPU you will need a Twin Turbo engine first bud Quote Link to comment Share on other sites More sharing options...
walkerstrider Posted June 7, 2014 Author Share Posted June 7, 2014 I knew that was coming! To much trouble and expense putting one in an aerotop tho! Quote Link to comment Share on other sites More sharing options...
Al Massey Posted June 7, 2014 Share Posted June 7, 2014 I knew that was coming! To much trouble and expense putting one in an aerotop tho! Lol With an NA, go full decat, get a decent manifold and you will get some nice gains and some good torque. Quote Link to comment Share on other sites More sharing options...
DodgyRog Posted June 7, 2014 Share Posted June 7, 2014 (edited) You can slightly increase the N/A with Double Decat, decent Panel Filter in the Stock Filter Box and a decent free flowing exhaust These are my last Dyno figures before doing a TT transplant. My N/A Engine was always a very strong engine though Also a full service, new plugs and keeping the Oil fresh helps The lower graph is just with the bung in the exhaust, it's amazing how power you loose when restricting the exhaust flow Edited June 7, 2014 by DodgyRog (see edit history) Quote Link to comment Share on other sites More sharing options...
walkerstrider Posted June 7, 2014 Author Share Posted June 7, 2014 Thanks buddy, not sure if its worth the expense for such a small increase. Quote Link to comment Share on other sites More sharing options...
Guest Budz86 Posted June 7, 2014 Share Posted June 7, 2014 That's what most say. Save your money and get a TT if you want the best platform for future mods Quote Link to comment Share on other sites More sharing options...
DodgyRog Posted June 7, 2014 Share Posted June 7, 2014 You are looking at a 30bhp increase, maybe a touch more if you have a healthy engine to start with, I was still running a stock manifold, which would of been my next upgrade In all honesty, if you want decent figures you need to look at going NA-T or doing a TT transplant Quote Link to comment Share on other sites More sharing options...
walkerstrider Posted June 7, 2014 Author Share Posted June 7, 2014 Had one but the fuel costs and insurance was killing me. Have to travel 54 miles to work everyday and can get around 30 mpg out of the N/A. Plus the future wife loves getting the roof off so she can pose! Quote Link to comment Share on other sites More sharing options...
walkerstrider Posted June 7, 2014 Author Share Posted June 7, 2014 30 horse powers not too shabby, think thatd be sufficient I dont exactly race it. Think the engines good, got full history for it just had the belts done and serviced. It has done 326000 kilometers tho, just over 200000 miles! Quote Link to comment Share on other sites More sharing options...
Luxluc Posted June 7, 2014 Share Posted June 7, 2014 You won't get a reasonable power increase from a naturally aspired engine, unless you spend a lot of money. A NA-T or TT engine would be the only off the shelf solution if you look for 240+ bhp. You can try to loose some weight from the car to get a better power to weight ratio. Quote Link to comment Share on other sites More sharing options...
Havard Posted June 7, 2014 Share Posted June 7, 2014 30 horse powers not too shabby, think thatd be sufficient I dont exactly race it. Think the engines good, got full history for it just had the belts done and serviced. It has done 326000 kilometers tho, just over 200000 miles! Jesus. I would be getting it dyno'd to see how much life it has left. Quote Link to comment Share on other sites More sharing options...
walkerstrider Posted June 7, 2014 Author Share Posted June 7, 2014 I know its a lot but cant really complain considering what I paid for it last year. Quote Link to comment Share on other sites More sharing options...
Nic Posted June 7, 2014 Share Posted June 7, 2014 Fitting a catback exhaust and decat pipes on a 2JZGE will only gain you a few hp's, perhaps 8-10hp at most, what it does do though is make the car feel a little more responsive and feel like it revs freer. It'll also make the car VERY loud particularly if you have a 3" exhaust fitted. I'd ditch the cone filter and fit the stock airbox back on. Quote Link to comment Share on other sites More sharing options...
Josh Posted June 7, 2014 Share Posted June 7, 2014 Had one but the fuel costs and insurance was killing me. Have to travel 54 miles to work everyday and can get around 30 mpg out of the N/A. Plus the future wife loves getting the roof off so she can pose! If you never see positive boost, the NA and TT should get around the same MPG. Quote Link to comment Share on other sites More sharing options...
pedrosixfour Posted June 7, 2014 Share Posted June 7, 2014 The cheapest/simplest/fastest/best way to increase the power of your car. http://www.mkivsupra.net/vbb/showthread.php?308242-Price-DROP-on-this-1JZ-GTE-engine-complete-with-ECU-STARTER-COILS-ECT Quote Link to comment Share on other sites More sharing options...
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