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Throttle Body
Posted: Fri Oct 31, 2008 5:46 pm
by NFS
Any1 on here know the throttle body size on a GTI and if it would fit on to a 1.4se 16v?
Posted: Fri Oct 31, 2008 8:26 pm
by bbspolo
i dought it mate as i think the gti has a differnt manifold and the throttle is a fly by wire type so it controled by your ecu! Not sure if your ecu will run it!
However if you were running a mappable ecu then you could use the polo gti manifold and throttle!
But i think you were looking for a cheep upgrade!
Posted: Fri Oct 31, 2008 10:44 pm
by NFS
yh thats why i s was asking im gonna get a stage 2 remap. The guy goes you will see alot higher gains if your throttle body was bigger. Im sure the throttle on my polo is controlled in exactly the same way as the one on a GTI. Do you know what size it is neway?
Posted: Sat Nov 01, 2008 12:47 am
by tegwin
IMHO...the fly by wire throttle on the GTI is s**t...
Get yourself a set of motorbike injection throttle bodies, get them setup properly on the engine and you will get far higher gains per pound than you would wiht the gti setup....
The main restirction on the intake is the cast manifold and head,.,...NOT the throttle body itself!
Posted: Sat Nov 01, 2008 2:07 pm
by NFS
I do want to put to much time and effot into fabricating parts and making sure they fit etc. The GTI throttle body works in exactly the same way as the 1.4 16v fly by wire. So does any1 know if the size of the thorttle body on a GTI atleast that way i can see if it is actually bigger or not.
Posted: Sat Nov 01, 2008 2:13 pm
by Trottagti
63mm!
theres ur answer lol
, pretty big considering others iv seen!
What stage u at now m8??
Posted: Sat Nov 01, 2008 2:16 pm
by NFS
Wow that alot bigger then by 51mm!!! Just done everything to the car i wanna do! cat back exhaust, high flow car, bmc cda induction kit, ram style air intake etc. Made the car identicle to a gti!!!! So just tryna get as much as i can from the engine so gonna get a stage 2 remap to get it up to around 100bhp.
Posted: Sat Nov 01, 2008 2:20 pm
by Trottagti
Yeah the throttle body is huge m8, iv got a viper pipercross and a back box like 3 inch strait thru one! Shifts as standard but im having my raceland and cat removed next week so loadsa fun lol!
Posted: Sat Nov 01, 2008 2:42 pm
by Trottagti
Theres one for sale on ebay 55quid!
Posted: Sat Nov 01, 2008 4:29 pm
by tegwin
If you fit a larger throttle body....would you need larger injectors?....just a thought...
Posted: Sat Nov 01, 2008 7:49 pm
by bbspolo
i dought it will comunicate with your ecu 2 be honnest mate and i work for vw!
bike carbs rearly arnt alot of work mate! theres loads of companys who will suplie u with the bits u need and im sure some1 will have it already on a shelf as your engine is 99% the same as a gti lump!
In fact get in touch with autosport as i know they will have all the bits and be able 2 set it up for u!
They make alot of the parts for the polo cup cars!
Posted: Sat Nov 01, 2008 10:54 pm
by NFS
errr... ive just gone and bought the gti throttle body of ebay for £50. Y wunt it communicate with the ecu? Only difference is the holez bigger, still works in the same way.
Posted: Sat Nov 01, 2008 11:04 pm
by tegwin
If it plugs straight in and works I will eat my socks!!!
Chances are the bus sensors will be totaly different....worth a try though i guess :S
Posted: Sat Nov 01, 2008 11:06 pm
by NFS
LOL im thinking of just lieing now and sayin it works like a dream
Posted: Sun Nov 02, 2008 1:50 am
by bbspolo
tps sensor i would guess is different!
Maybe wrong so let me know if it works as id be intrested 2 know!
U do know fitting a 2big throttle will kill your throttle responce as the manifold wont be able 2 cope with the difference in afs (air flow speed!)
But it depends from engine 2 engine so no1 who hasnt tried this will be able 2 tell u its just r&d that will tell if it works!
Good luck