David P Posted August 2, 2009 Share Posted August 2, 2009 Hello, I am a "Newbe". I have a 1995 N/A mk 1V and planning the following modifications. HKS air filter. Autobahn exhaust manifold with 3" exit. 3" decat front pipe with Magnaflow 200 cell 3" bore cat spliced in. HKS 3" catback exhaust. ECU remap. Could any please tell me what bhp torque gains are to be expected from thse mods? Thank you David Quote Link to comment Share on other sites More sharing options...
Kirk Posted August 2, 2009 Share Posted August 2, 2009 you will probly loose low end torque but gain high end power so id say so more than 10-20hp more max Quote Link to comment Share on other sites More sharing options...
David P Posted August 2, 2009 Author Share Posted August 2, 2009 Mmm, That's a dissapointingly small number, I was guessing it would give me around 50 horses more! Quote Link to comment Share on other sites More sharing options...
Kirk Posted August 2, 2009 Share Posted August 2, 2009 no chance with an na without nitrous or some serious money thrown at it, best thing to do is either turbo it or do a full tt swap end of Quote Link to comment Share on other sites More sharing options...
jon5698 Posted August 2, 2009 Share Posted August 2, 2009 Have a search of the forum mate i am sure there are hundreds of topics about this, you will get all the info you need Quote Link to comment Share on other sites More sharing options...
David P Posted August 2, 2009 Author Share Posted August 2, 2009 HKS air filter. +5bhp Autobahn no cat exhaust manifold with 3" exit. +20bhp 3" decat front pipe with Magnaflow 200 cell 3" bore cat spliced in. +5bhp HKS 3" catback exhaust. +10bhp ECU remap. +15bhp These wishfull sums are ficticious then? Quote Link to comment Share on other sites More sharing options...
little num Posted August 2, 2009 Share Posted August 2, 2009 Search button is your friend Quote Link to comment Share on other sites More sharing options...
Blackie Posted August 2, 2009 Share Posted August 2, 2009 HKS air filter. +5bhp Autobahn no cat exhaust manifold with 3" exit. +20bhp 3" decat front pipe with Magnaflow 200 cell 3" bore cat spliced in. +5bhp HKS 3" catback exhaust. +10bhp ECU remap. +15bhp These wishfull sums are ficticious then? Mostly made up by the people selling them mate Quote Link to comment Share on other sites More sharing options...
Kirk Posted August 2, 2009 Share Posted August 2, 2009 http://www.mkivsupra.net/vbb/group.php?groupid=22 Quote Link to comment Share on other sites More sharing options...
Al Massey Posted August 2, 2009 Share Posted August 2, 2009 I thought the ECU couldnt be remapped Quote Link to comment Share on other sites More sharing options...
Kirk Posted August 2, 2009 Share Posted August 2, 2009 my understanding was it was a twat to work with Quote Link to comment Share on other sites More sharing options...
w41k3r Posted August 2, 2009 Share Posted August 2, 2009 who remaped the ecu as i also thought it couldnt be remaped also the hks filter is crap at filtering i got rid of mine when i took it of and looked in the pipes and throtle body there was like a mucky soil type stuff all over now i have an apexi as it came out on top for filtration Quote Link to comment Share on other sites More sharing options...
Tom Posted August 2, 2009 Share Posted August 2, 2009 I'm sure you can remap the ecu with a piggy back, just not "chip it" Quote Link to comment Share on other sites More sharing options...
Kirk Posted August 2, 2009 Share Posted August 2, 2009 supose you could but wouldnt get you far, maybe a few horses and more effiecent map at the most. Just not worth it IMO Quote Link to comment Share on other sites More sharing options...
Tom Posted August 2, 2009 Share Posted August 2, 2009 it's an expensive route for little gains imo, but there will be some who are happy with the n/a power from factory so if they can take it to 250bhp that wouldnt be so bad it'll be nippy enough for most of the time Quote Link to comment Share on other sites More sharing options...
Guigsy Posted August 2, 2009 Share Posted August 2, 2009 HKS air filter. +5bhp Autobahn no cat exhaust manifold with 3" exit. +20bhp 3" decat front pipe with Magnaflow 200 cell 3" bore cat spliced in. +5bhp HKS 3" catback exhaust. +10bhp ECU remap. +15bhp These wishfull sums are ficticious then? HKS filters are especialy rubbish. if anything you will loose power because your sucking in hot air from the engine rather than the stock airbox sucking in fresh "cold" air. They are also particulary crap at actualy filtering anything. Manifold - 20hp is optomistic. i would guess more like 5-10hp. I guess the exhaust might get you 5hp (total, catback and decat). The stock ecu cant be remapped. Quote Link to comment Share on other sites More sharing options...
L33 Posted August 2, 2009 Share Posted August 2, 2009 another need more power out of a na thread Quote Link to comment Share on other sites More sharing options...
stevie_b Posted August 2, 2009 Share Posted August 2, 2009 HKS air filter. +5bhp Autobahn no cat exhaust manifold with 3" exit. +20bhp 3" decat front pipe with Magnaflow 200 cell 3" bore cat spliced in. +5bhp HKS 3" catback exhaust. +10bhp ECU remap. +15bhp These wishfull sums are ficticious then? Who gave you those estimates? I agree with the comment about the filter losing you bhp unless you duct it very well. Quote Link to comment Share on other sites More sharing options...
Wez Posted August 2, 2009 Share Posted August 2, 2009 HKS filters are especialy rubbish. if anything you will loose power because your sucking in hot air from the engine rather than the stock airbox sucking in fresh "cold" air. They are also particulary crap at actualy filtering anything. Manifold - 20hp is optomistic. i would guess more like 5-10hp. I guess the exhaust might get you 5hp (total, catback and decat). The stock ecu cant be remapped. Listen to this post, he makes sense Quote Link to comment Share on other sites More sharing options...
hoff Posted August 2, 2009 Share Posted August 2, 2009 I would echo what has been said and maybe reduce the 3" decats to 2.5". Other than that, without throwing masses of cash at it you wont get any further. Quote Link to comment Share on other sites More sharing options...
w41k3r Posted August 2, 2009 Share Posted August 2, 2009 i would like to see some one use the cams on supraforums the ttc ones i think inlet and exhaust for the n\a i would like to see what gains you could get from them Anybody got them ??? Quote Link to comment Share on other sites More sharing options...
Kearney Posted August 2, 2009 Share Posted August 2, 2009 i would like to see some one use the cams on supraforums the ttc ones i think inlet and exhaust for the n\a i would like to see what gains you could get from them Anybody got them ??? I'm actually dying to see the gains you'd get from a set of BC cams for the N/A. Theres a stage 2 set thats apparently plug and play. Surely it would have to do something for the car. Quote Link to comment Share on other sites More sharing options...
Dazzi Posted August 2, 2009 Share Posted August 2, 2009 HKS air filter. +5bhp Autobahn no cat exhaust manifold with 3" exit. +20bhp 3" decat front pipe with Magnaflow 200 cell 3" bore cat spliced in. +5bhp HKS 3" catback exhaust. +10bhp ECU remap. +15bhp These wishfull sums are ficticious then? After doing most of them mods myself I'd say 10hp max on all the above except the ECU remap, as it can't be done. You won't notice any gains at all, it may sound faster from the noise but more then likely it won't be as 3" straight through will make the car run rich (past experience). Quote Link to comment Share on other sites More sharing options...
Kearney Posted August 2, 2009 Share Posted August 2, 2009 After doing most of them mods myself I'd say 10hp max on all the above except the ECU remap, as it can't be done. You won't notice any gains at all, it may sound faster from the noise but more then likely it won't be as 3" straight through will make the car run rich (past experience). So reaslistically the manifold it the best gain. out of the group of them? Any videos? Quote Link to comment Share on other sites More sharing options...
Dazzi Posted August 2, 2009 Share Posted August 2, 2009 So reaslistically the manifold it the best gain. out of the group of them? Any videos? Yes, the manifold is the only one likely to give you any HP increase. Quote Link to comment Share on other sites More sharing options...
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