noise after installing 69mm throttle body??

[hoofelmuma]

i after switching the car off, it makes a hissing noise for about 2 seconds, would this be the restrictor put in one of the tubes or could this be some thing bad?

[VR_Acclaim]

define hissing like an idution noise hiss if so its just letting the excess air out

[IBLOWN]

The motor is under vacuum at idle from the T/B to the heads. When you turn the motor off the vacuum equalizes back to atmospheric pressure. Its just the sound of the vacuum equalizing back through the T/B.

[hoofelmuma]

cheers man, thats a relief

[hoofelmuma]

also i was wondering if somthing is rong. ive noticed it changes gear at 2000rpm, were before the mod it would change at 2500-2700. i have to really put my foot down 4 it get past 2000. its almost like it gets stuck there. also has trouble starting on a clod start, neva had that problem b4. its an ecotech 3.8l auto with a 12mm plenum spacer, 2 hole mod k&n air filter and at the same time i did the throttle body i changed spark plug leads to 8mm

[MACE]

also i was wondering if somthing is rong. ive noticed it changes gear at 2000rpm, were before the mod it would change at 2500-2700. i have to really put my foot down 4 it get past 2000. its almost like it gets stuck there. also has trouble starting on a clod start, neva had that problem b4. its an ecotech 3.8l auto with a 12mm plenum spacer, 2 hole mod k&n air filter and at the same time i did the throttle body i changed spark plug leads to 8mm

hoofelmuma,

If you've installed our TB exactly to these fitting instructions http://www.maceengineering.com.au/We...STALLATION.pdf then there is definitely a problem with the TB if you're experiencing cold start issues etc. Please keep us posted and we'll take it from there.

Cheers
Steve

[hoofelmuma]

hey

yeah i followed those instructions. yesterday i repeted disconecting the batt, rev it up and conect again. so far i have noticed it starts up all good during on a cold start but when i was on my way to work i found i had to push the brake harder to stop at the lights. when ideling it revs up to 1500-2000 rpm in drive and in netural it revs to 2500. when i switch the car of and on again the ideling revs go back to normal 650- 750 rpm. was wondering if a tune or memcal would fix my problems or should i take out the 69mm tb and replace it with stock then wait till i get more done to the car b4 puting it back in?

[hoofelmuma]

also dont no if this has any thing to do with my problem but when taking off stock tb we broke the cruse control clip so 4 now just got it cable tyed off out of the way lol. its next on the list when i get payed

[MACE]

hey

yeah i followed those instructions. yesterday i repeted disconecting the batt, rev it up and conect again. so far i have noticed it starts up all good during on a cold start but when i was on my way to work i found i had to push the brake harder to stop at the lights. when ideling it revs up to 1500-2000 rpm in drive and in netural it revs to 2500. when i switch the car of and on again the ideling revs go back to normal 650- 750 rpm. was wondering if a tune or memcal would fix my problems or should i take out the 69mm tb and replace it with stock then wait till i get more done to the car b4 puting it back in?

Is the check engine light coming on by any chance? To me the symptoms you're experiencing are a faulty TPS, vacuum leak (is the O ring in the IAC valve?) or a faulty TB. If you can verify that the TPS is good and that there are no vacuum leaks (no hoses disconnected o ring on the IAC valve) send the TB back up and we'll get you out another one ASAP

Cheers
Steve

[hoofelmuma]

hey

i replaced the tps and iac with stock and so far so good. the only thing i dont like is that it changes gear earlyer is there a way to change it or is that just wot happens

[MACE]

Ah good. If you've installed the rtestrictor as per the fitting instructions and are still not complete happy with the way the car shifts then this will solve it Reviews: 4L60e Single Stage Shift Kit - $70.00 : Shiftkits Australia, Performance Shift Kits and Vehicle Electronics

Cheers
Steve

[delcowizzid]

i doubt they will fix early shifting they just up the line pressure in the trans to make them change harder

[MACE]

i doubt they will fix early shifting they just up the line pressure in the trans to make them change harder

If it doesn't solve his shifting problem I'll pay for that shift kit

Cheers
Steve

[MACE]

The reason shift kit will work is that eliminates the delayed/flared shifts that some people may be experiencing depending on their driving styles. It may not bring all the shift points exactly the same as from factory (quite close from memory) but works very well with the TB. Not only from my own personal experience but from the feedback of other customers over the years.

[hoofelmuma]

hey
lol soz 4 the l8 post but i lost my phone and wallet and had to cancel every thing now cant buy the shift kit till i get my new card sent out. but deff gonna get it sound like it will fix my shift prob. thanx 4 all the help i will let u no wot its like once ive installed it

[acarmody]

Yeah losing your wallet sucks, don't worry though, you will find it on the same day you have bought a new wallets and paid to replace all the crap inside it. Works for me every time.

[MACE]

I use to lose my wallet and keys often, heck I've accedently posted off my wallet to a custom in Tas once by accident

However ever since I got a bum bag I haven't lost any of my personal possessions that I normally carry with me

[acarmody]

HAHA bum bag. Reminds me of a joke. Why do bodybuilders wears bum bags? It's as far as they can reach.

[MACE]

Yeah bum bag don't have the best rep LOL

But for me the use of one is out of necessity for me to keep tabs on my personal possessions. Haven't lost my keys wallet since

[delcowizzid]

gotta watch guys with bumbags LOL

[acarmody]

HAHA gold. Man I sent this thread sideways.

[billy bob]

Ah good. If you've installed the rtestrictor as per the fitting instructions and are still not complete happy with the way the car shifts then this will solve it Reviews: 4L60e Single Stage Shift Kit - $70.00 : Shiftkits Australia, Performance Shift Kits and Vehicle Electronics

Cheers
Steve

Steve, do you put this shift kit in instead of the restrictor or as well as?

[mking]

i had the same problem with both my cars vs ecotecs whentb was installed the early shifts in 1st gear unless you give it heaps, got a tune from delcowizzid and it shifts perfect now

[MACE]

gotta watch guys with bumbags LOL

ROFL! I don't feel as bad having one then considering Chuck Norris has one

Steve, do you put this shift kit in instead of the restrictor or as well as?

You can run both, though we use to run these before we developed the restrictor.

[hoofelmuma]

o k i finally got the shift kit and installed it the other day. Works like a charm, am very pleased with it thax 4 recommending it 4 me Steve