Originally Posted by
stevecfrst1
Thanks for the reply’s. Its hard to know what to make of different tuners/people in the know opinions on turbo’s/engine tuning ect. The tuner i use is well known and respected and im sure he’s said that there is no way a standard cossie motor can do 500 hp by just putting a borg warner turbo on as the engine cant flow enough air without having the head ported and cams changed ect. Also that in real terms a borg warner will only spool about 400rpm quicker than say a garret gt3071. Wheras i know that ma developments have shown getting 500 hp out of an internally standard motor, and swear by the response being night and day different to the garret stuff. Im not saying anyone is right or wrong or whatever, just makes it difficult to know who is right or wrong and what way to go.
Given the wide range of turbos out there, housings etc....it's just plain nonsense to claim a good turbo will only spool 400rpm sooner than an ancient GT3071.
Which GT30, which turbine housing, what supporting mods etc etc etc ?
It's as wide open as saying one cossie will be faster than another....yet there are still many many variables behind that.
And there are people around the world who have done 500+ on a standard engine. Is it the right way ? Are there better ways ? of course....but it can be done. But a headline number isnt what you should be seeking for a fast regularly driven road car.
As said, fitting a good modern turbo that might only get you in the 4-500hp range but something that spools fast, will be night and day difference than a laggy piece of crap. If you get a setup that's making strong boost/torque by 3k and still performing right to redline.....you'll really be impressed
Get a modern turbo on it and it will be vastly different ( once tuned ) without even touching anything else.