cosmicchris00

I've recently purchased a 2nd hand HKS Super Drager back box, mid section ans STi cat (from a v5). When this goes on my MY99 UK wagon what sort of difference can I expect given the existing mods are; Magnex back box, ITG panel filter.

I'm expecting a similar noise but is there likely to be a discernable performance difference?
Can anyone recommend the next sensible modification?

I don't fancy chipping it or going to the expense of headers but if anyone can really recommend something it may be a runner.

stevebt

iTrader: (8)

more lag ive just put an hks drager full system on mine turbo used to come on full boost at 3400rpm it doesnt come on full boost till 4100rpm now but ive got a mpping session shorthly so im not bothered

cosmicchris00

Exactly what does lagging accomplish? Will the turbo max boost be affected by the STi cat if I haven'y modded the engine out to turbo section? Is the Sti cat significatly different to the Standard UK Cat?

Delboy2

Which Cat are you retaining? Downpipe or Mid-section?
This depends on what you are lagging - If its the downpipe this normally reduces the noise levels heard in the car and more importantly reduces the heat levels in the engine bay.

Cheers

EddScott

You might want to change the ITG panel too.

When I had my car re-mapped I was told I'd have to replace it before they did the map due to the ITG damaging the MAF sensor. My ITG must have been in place for about 6 months and the MAF is fine BTW.

cosmicchris00

I'll be replacing the downpipe cat with an Sti 5 unit. I'm a bit mystified as to how the ITG filter would have to be replaced. Most people seem to consider them the dogs danglies. How does it damage the MAF?
The lagging business will definitely have to be looked into, so thanks for the advice

stevebt

iTrader: (8)

what is the point of taking your down pipe off and putting an sti5 down pipe on arent they both the same

cosmicchris00

Is the Sti Cat the same as std UK? I don't know, advice please?

Jake

Just save for a decat dp and fit that instead, best performance increase exhaust wise.