wut is the effect of upgraded front pipe?

[Guest INASNT]

Originally posted by benm

I'm getting my Dump + Front pipes installed next Wednesday and then my car Dyno'd the following saturday.  

I'll post a before/after dyno thread so all can see the difference.

when i did mine the dyno graph wasent really much higher peak but more midrange and response while driving which the dyno wont show!

[GTS-t VSPEC]

SORLO,

When upgarding to a bigger turbo there are many parts which need upgrading or replacing, consider the following list:

Injectors

Fuel Pump

Stronger clutch

Intercooler pipes(factory pipes are very restrictive)

Exhaust Manifold

If running high boost(2bar) then consider forged internals

See'ya:burnout:

[Guest SORLO]

MR SPARKLE,

Then do u satisfy to the dump pipe performance?

GTS-t VSPEC,

Thanks for your info. supply, i will think about it..........

[Guest INASNT]

Originally posted by SORLO

MR SPARKLE,

Then do u satisfy to the dump pipe performance?

yep in combination with the rest of the system it works great!

[Guest SORLO]

MR SPARKLE

That's great.

i am going to order the HKS stainless steel dump pipe end of this month. But the diameter of the pipe is just 75mm. There is another brand "Trust" have 80mm in diameter, but only in ordinary steel material. What do you guys prefer for the material or the diameter as the first priority?

[GTS-t VSPEC]

SORLO,

Go for the 75mm stuff, that is 3", you will have a harder time getting the 80mm stuff to fit up with the rest of your system otherwise. You don't want any changes in pipe size, as it will cause turbulance.

See'ya:burnout:

[Guest INASNT]

sorlo

this is the dump i got

its made of 304 stainless steel

[GTS-t VSPEC]

INASNT,

That is one sexy dump pipe, but I think the wastegate pipe should meet up a bit further down(20cm or more), probably doesn't make much difference on a stock turbo though.

See'ya:burnout:

[Guest SORLO]

what about the material, stainless steel or ordinary steel is better?

[GTS-t VSPEC]

It doesn't realy matter, but stainless will crack if there is too much heat. Can always ceramic coat them.

See'ya:burnout:

[APA]

i got apexi n1 front pipe

which i believe is 75mm? correct me if i'm wrong

adrian

[Guest SORLO]

Adrian_perth

isn't that stainless steel or something else?

[Guest SORLO]

there are two model (1) N1 front pipe only 70mm and (2) GT. front pipe is 80mm?

Does it provide a satisfactory response on acceleration?

[rev210]

Originally posted by GTS-t VSPEC

It doesn't realy matter, but stainless will crack if there is too much heat. Can always ceramic coat them.

See'ya:burnout:

Nope.

I have a stainless 3inch wrapped in thermal tape. If it was going to crack it would have by now. The cracking happens when the pipe takes a huge hit of heat and gets moved/twisted. This happens with GTR's so they usually have a flexible pipe bit.

[APA]

yeah i got the n1 70mm

it's made outta mild steel i think

i ain't sure

but it's a black colour

and yes it does provide more throttle response

and a tad more midrange power

adrian

[GTS-t VSPEC]

rev,

I doubt whether the stock turbo will put most stainless under enough heat, but it has happened with a number of aftermarket turbo's.

See'ya:burnout:

[Guest INASNT]

Originally posted by GTS-t VSPEC

INASNT,

That is one sexy dump pipe, but I think the wastegate pipe should meet up a bit further down(20cm or more), probably doesn't make much difference on a stock turbo though.

See'ya:burnout:

paul

its made to the same spec as hks dumps, its actually about 20cm from the flange to where the they join again!

It did make a noticable difference with throttle response and midrange.

304 stainless wont crack that easy, 314 stainless will.

[GTS-t VSPEC]

INASNT,

Sorry it didn't look like 20cm, aslong as it work then that's great, I noticed a big improvement from mine aswell.

See'ya:burnout:

[Guest Nismo_Freak]

Stainless is a superior material however I would take the Trust unit with its bigger diameter and wrap it with header wrap. If you wrap the whole pipe from turbo to cat you will keep some of the heat in the exhaust which makes for more exhaust volume which equals faster exhaust velocities. This in turn allows the exhaust to propel itself faster out the tail pipe, which can make more power because the engine is not doing the work.

[benm]

I had the rest of my exhaust fitted yesterday (as mentioned earlier in this thread). The difference is absolutely amazing.

This Saturday my car is on the dyno and i'll post pics of before/after.

Basically your kidding yourself if you think a cat-back exhaust is enuff.