Throttle Body Mods

[DRTDVL 4 1 Cars]

Hi,

 

I know my friends running the misty mivec (1.6 high reving thing) get good gains from oversizing the throttle body and smoothing out the butterfly.

 

 

Standard throttle is on the right.

 

Would something like this be benifical to the mi16 throttle body?

[Baz 421]

Not amazingly IMO no. Although i do have one.

[DRTDVL 4 1 Cars]

On a modified mi16?

[Baz 421]

Well, semi-std Mi16.

[Baz 421]

Juts dug out a pic;

 

[DRTDVL 4 1 Cars]

Hmmm ok then i wont bother...

[Baz 421]

I wouldn't tbh for the money they are, can't remember how or where mine came from but i wouldn't pay what i've seen them for sale for.

[mrswampy 0]

I also run one on my s16

cant say what differance it made as it was fitted in conjunction with a modified inlet manifold

ptfe inlet gasket and group a decat

[EdCherry 34 1 Cars]

group a decat

 

How can it be a Group A decat, surely a decat is a decat is a decat?

[Batfink 201]

maybe its made out of mild steel?

[mrswampy 0]

On the 306 there are two types of decat

 

group n which is a single tube item, much like a standerd 205 gti downpipe with a divider in it

 

group a is a twin tube affair, these are very hard to get hold of either new or 2nd hand.

 

both are shown on the peugeot boutique website

[brumster 135 1 Cars]

I enthusiastically did this mod on the 1.75" SU carb on my first ever car, an MG Metro after reading David Vizards' "Tuning the A-Series" guide and figuring it was one of the few things I could do for free.

 

Obviously coupled with zero other modification on a 1275cc 4-potter, it made bugger all difference. But if you're at the other end of the scale and after every last oodle of flow I guess it's an easy mod to do. But I wouldn't bother on a standard engine unless you're just bored one Sunday!

[nick 3]

Dave Walker did an article a few years back on this but with carbs. There was absolutely no gains at all on the flowbench to the point that he even took the butterfly and spindle out completely and still gained nothing!!

 

Nick

[Henry Yorke 269 3 Cars]

Wasn't the old Mi trick to add a VAG VR6 throttle body instead for better flow, or did that prove to be another cyberspace myth?!

[DRTDVL 4 1 Cars]

Wasn't the old Mi trick to add a VAG VR6 throttle body instead for better flow, or did that prove to be another cyberspace myth?!

 

 

Really?

 

Ohhhh would love to know if thats possible?

 

Do you need to change anything else?

[Henry 1.9GTi 36]

ive got the VAG throttle body on mine, I don't think they come from the vr6 though. But seems to go straight on, throttle cable is a bit tricky to fit.

 

I can't see the point in tb mods if still using an AFM, not sure on frontal area but would be the first thing to ditch. Seems like a lot of effort for no gain

 

Fit ITBs or force the air in