Better, yes, but IMO not worth the cost/trouble until more mods are done like udp, IC's, zorst etc... Kiz I'd be going udp and pulley set next, does wonders for response and on stock motor IMO you won't have any issues (even on a big hp vg the jury is still out on that one):zlove:
yeah, a few people here have had varying results with the npower/tuneagent clones. I would definately like to upgrade at some stage to a better set for a decent comparison. Regarding springs, i added a helper springs to help the wastegates stay shut because with the npower dumps the gates were starting to opening due to more flow over stock dumps. But end of the day, both dyno comparisons were done at the same manifold boost pressure.
It looks like I'll be saving up for a pulley set then Will bigger ICs increase lag at all? I was looking at getting the GReddy ones.
pulley set wont get you off the line quicker at all... id be looking at. reducing your car weight, and increasing power. also ES eurethane bushes are great and help get rid of diff bounce so you can get off the line faster..
May or may not increase lag, depends on the quality... Chances are you won't notice any extra lag if at all... Will allow you to run more boost and then worth a tune tho
With an auto you should be able to generate boost before leaving the line. Foot hard on brake, bring revs up to 3,000 rpm and let go of brake pedal when lights change. For more boost off line, higher stall convertor.
Thats why I suggested that already The Npower are fine for the money geesh I was being realistic here.
Hahahh thanks guys. Perhaps I wasn't holding the revs high enough on the line. It seemed to take forever after I launched before I felt the turbos kick in...
I realise I am flogging a dead horse here, but just can't help myself... Why is spending $300 on a pair of poorly engineered dump pipes that produce minimal, inconsistent results considered good "value for money"? But spending $600 on a pair of better dumps that are well designed and produce consistent results is considered "expensive"? I just crunched some numbers and on a $$/KW basis, my set of tuneagent dump pipes cost MORE than my entire engine rebuild from beginning to end. Food for thought.
Part of me wants to get things done as cheap as possible (the part that looks at the bank balance) but then part of me wants to just do it right the first time. It's finding the compromise that makes all of me happy that's the hard bit
Why stop there? why not get gold plated super dumps that cost 5k? theres always something better isnt there? After reading benny's threads relating to his N power dumps I sort of assumed for $300 they arent half bad. Also Kieren has told me himself the rest of his exhaust wasn't that expensive.
But Rob, arent they just tuneagent copies? Benny_C's monster seems happy enough churning out 320rwkw with them.. I wouldnt put down inconsistency as being to the dumps alone, theres the rest of the exhaust system to consider as well (ie blocked cats) Even if gains are minimal, IMO its a similar modification principle to that of bigger intercoolers - more efficient and more scope to run higher power levels without bottlenecking the setup..
Yes but the idea isn't that I'm trying to push 300kw through any part of the exhaust system, it's that I'm trying to increase low-end responsiveness and reduce lag.
Yeah the same design is sold under many, many names. Don't know who originally made them? I understand what you are getting at, but in the case of these dumps Benny is the only one to experience any significant gain. In my own first hand experience (with a good car and good exhaust) the do SFA and others have had the same experience. The problem is in the design which is in nature very restrictive. They are only a 2.4" dump (not a big drop from 2.5" but still something) and the divorced section is nowhere near long enough. For there to be any significant reduction in turbulence the wastegate pipe needs to be more like 30cm long, which is why the CES, Specialtyz Supersplit and similar pipes work so well. I would be very interested in how the wastegate and exhaust openings compare in size from the Tuneagent to Stock dumps... And in Benny's case how the exhaust opening in the dump compares to the size of the exhaust wheel in his turbo. Tuneagent dumps are very inefficient on bigger turbos as has been proved with the dyno testing done for the SZ 3" expansion dumps (comparing them to z1 version of the tuneagent style dump). As far as dump pipes on stock turbos I would stick with stock unless high flowing... or if you really believe stock turbos benefit from reduced turbulence fit SZ supersplit style pipes. The argument that you can't go wrong for $300 seems like a flawed way of thinking to me if the $300 nets you 0 return.
I understand your question but I dont get why you think it relevant. If you have a stock setup the engine is on full boost at 3500revs. You have to launch on boost, gear changes will not drop the engine speed to under 3500revs. All this should be conducted ON BOOST. If you are serious about this 2 items will improve your quarter times. 1) Hi stall torque converter 2) Leader diff gears. All the rest are just dressup items compared to the improvement of those 2 bits of kit will deliver.
