Can I Use A Gti Exhaust?

[sam jfm 0]

well the back box, i cant find one for a 1360 205? would it be ok for the job?

[Anthony 1,003]

Yes, it fits and works fine, although if my experiences on my XS were anything to go by, it was a little more noisy inside the car (and gained an bizarre high-rev rasping noise on overrun ) when running the GTi backbox over the original one.

[jackherer 543]

I've got a back box from an XS, I fitted it to my mates car then he crashed less than 100 miles later so it is virtually brand new, PM me if you're interested.

[sam jfm 0]

well its for a rally car so its going to be noisy anyway! could i use an uprated one or would i gain nothing?

[DrSarty 90 1 Cars]

well its for a rally car so its going to be noisy anyway! could i use an uprated one or would i gain nothing?

 

How much (power I presume) do you expect to gain just from a back box?

[Batfink 201]

some of the TU centre sections are straight through so there is potential gain in theory, though its more likely the manifold is the worst part

[sam jfm 0]

well i have a 421 mani on there with a straight through center section, dont get me wrong im not one of the "back box thats going to give me 500bhp" people! i just wonderd if a uprated back box would help flow, if it wont then i will leave it!

 

Is there anything wrong with the standard one?

[Anthony 1,003]

well i have a 421 mani on there with a straight through center section, dont get me wrong im not one of the "back box thats going to give me 500bhp" people! i just wonderd if a uprated back box would help flow, if it wont then i will leave it!

For what it's worth, I noticed no difference good or bad in terms of performance when I swapped the standard backbox for a GTi one on my XS (which had the 1.1 straight through center pipe fitted)

[allye 530 3 Cars]

Digging up an old debate about TU exhausts here! (even though I'm a new member have read many-a-topic about TU exhausts in the past) many members are of the opinion that straight through centre sections and free flowing back boxes actually loose you power as back pressure is required! Up to personal choice I guess!

 

Ali

[Craig89 0]

Slightly off topic but can you use a GTi centre section on a TU engine and manifold?

[j_turnell 137 3 Cars]

Slightly off topic but can you use a GTi centre section on a TU engine and manifold?

 

 

No, they are completely different.

[Craig89 0]

No, they are completely different.

 

ok mate cheers

[sam jfm 0]

anyone care to recomend a make thats fairly cheap and will work well?

[swordfish210 20]

Bosal (or Bosai, i can't remember) are available from most motorfactors and a pretty good.

[sub205 5]

some of the TU centre sections are straight through so there is potential gain in theory, though its more likely the manifold is the worst part

 

the manifold isnt that bad, its the same as the tu5jp in the 306. (89ps)

[sam jfm 0]

Can i use the sleeve type center section with the sleeve type gti back box? do they match up dia wise?

[sam jfm 0]

Anyone?