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MK4 N/A Manual - Best Way To Increase BHP?


herbiemercman

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Hi everyone, I have owned my car from new and don,t really want to part with it but i would like to increase the BHP, can anyone reccomend the best way to do it, ?

 

fit turbo, decat, remap, etc. the cost and expected increase in BHP> ?

 

Please, technical answers as i know some will say buy a box of matches and then buy a TT. herbiemercman.

 

SUPRA GOOD PICT..jpg (193.7 KB)

SUPRA GOOD PICT..jpg

Edited by Littler (see edit history)
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Best option is either NA-t or drop a TT engine in it. Either way you're looking £3k plus. (TT6 conversion circa £6k)

How much extra BHP depends on how far you go/money spent.

 

Just buying a TT would be cheaper, short term, but there may be hidden problems with any purchase of cars this old.

 

Decats and induction on an NA won't get you much more power (not a noticeable increase anyway)

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many thanks for comments guys, you just confirmed my experience to date, just thought somone would have a turbo kit by now, never mind i will just enjoy how good it looks, and the fact that very few cars have matched it on the m/ways.

 

The car was imported new via michael welsh in cork southern ireland 15 yrs ago. herbiemercman.

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many thanks for comments guys, you just confirmed my experience to date, just thought somone would have a turbo kit by now, never mind i will just enjoy how good it looks, and the fact that very few cars have matched it on the m/ways.

 

The car was imported new via michael welsh in cork southern ireland 15 yrs ago. herbiemercman.

 

Paul has a turbo kit at whifbitz and there are a lot of NA-T's about, have a search and you will find some of the builds but personally I'd leave it be.

 

http://www.garagewhifbitz.co.uk/index.php/garage-whifbitz-11773.html

 

Also edited the title to something a bit more readable :)

Edited by Littler (see edit history)
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decat - Just makes the car noisier and free's up a couple of HP

 

remap - Can't be done with out some form of piggy back or standalone ecu. Even then its a waste of time and money

 

fit turbo - Best option really but not cheap to do it right and you will be limited to the amount of boost you can make. The gearbox won't stand up to the increase of torque for very long unless you drive it like its on life support which defies the whole point of extra HP.

 

the cost and expected increase in BHP - Anywhere around 2k - 5-6k+ depending on parts used, who builds it and how far you push it. Again engine will be limited on boost so at a guess 350-400hp at most.

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Looks a lovely car, the decat's do make a difference (NA owners are more sensitive to small gains :) ) even Chris Wilson has been quoted as saying he was surprised at the difference. The trade off is (excessive) noise.

 

out of interest scooter, excessive noise in the car or through the tailpipe? I can live with a noisy cabin but don't want Mr db man to fail me on a noise test.

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safcdixon, littler, kirk, scooter, good technical answers, appreciated.

 

I also have to accept the more jokular posts as there is truth in them, it's a great pity that toyota put such a low bhp power unit in the na's, may be i have been lucky with my experience , many cars just give up at the 120mph mark, also the supra is much more stable at speed than turbo fiats etc, especially in windy weather.

 

I got a 3 months ban 6 yrs back for averaging 120mph comming down from beatock on the m74, the chase car was a vauxhall sri, a fast car , but not fast enough, he only caught me where the m/way goes from three to two lanes.

 

My brother bought the mk4 tt at the same time that i bought my car, 1995,he still has it in cotton wool,it's also been to chris wilson, i have driven it in the iom, super grunt, but not keen on the auto bit, i like to drive, my car is manual, and put some wheel spin on when there is an audience.

 

So i can soldier on or bite the bullit and buy a black tt manual, this car has to be black, IMHO, and has to be manual. There are some nice examples on this site but it is £20k for the right one. herbiemercman.

 

SUPRA SNOW DUSTING..jpg (180.0 KB) SUPRA.MEH.#2.jpg (81.2 KB) SUPRA. SUP. SIDE.BEST PICT. JAN 2012..jpg (82.6 KB)

SUPRA SNOW DUSTING..jpg

SUPRA.MEH.#2.jpg

SUPRA. SUP. SIDE.BEST PICT. JAN 2012..jpg

Edited by herbiemercman
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If your looking at the £20K mark i'd stretch and pick this one up :)

 

http://mkivsupra.net/vbb/showthread.php?286324-1998-Supra-6-Speed-VVTI-HKS-T04Z-600ps-(late-model)-very-low-miles-13-000

 

But I find myself keep looking at this one and thinking it's pretty much done, add a syvecs in, tidy up the engine bay, put my current wheels on and add my own interior touch (no gauges, clean stock panels and toucan display), it will save me a lot of the money I'm looking to spend :(

 

http://mkivsupra.net/vbb/showthread.php?276837-Black-1995-UK-6-Speed-Single-Turbo

Edited by Littler (see edit history)
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If you want to stick NA and increase hp... intake and exhaust and after this... higher revs and too much money for a noticeable result.

 

- - - Updated - - -

 

If you want to stick NA and increase hp... intake and exhaust and after this... higher revs and too much money for a noticeable result.

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out of interest scooter, excessive noise in the car or through the tailpipe? I can live with a noisy cabin but don't want Mr db man to fail me on a noise test.

 

my direct experience is mainly forum feedback and seeing/hearing others. I have a Blitz Nur spec S which is just replaces the very last section of the stock exhaust and that makes a fair difference. Both cats out and it'll be loud even with the stock twin box centre section. Non cats and say a Blitz Nur spec R exhaust is stupidly (setting other car alarms off) loud.

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I have a manifold decat and 2nd decat and one of Paul Whiffin's twin box catback exhausts and it keeps the noise well in check. Get a mines ecu too if you are lucky enough to find one.

 

The only downside to all this is that by the time you buy and fit all this stuff for a few £££'s extra you could of had a auto TT sadly, not that I would ever be silly enough to do this :sly:

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