Ok... I am sure this has been posted before, but I have searched every wheere and can't find it.

I am running JWT C2 cams, 1000cc injectors, FCON, and a number of other mods that I will be making a post about very soon... I am having an issue with the car wanting to idle with these things. It wants to idle somewhere between 750-1000rpm. Constantly hunts for idle and then stalls. I have a 2005 and we have already tried an idle bump with the Consultant 2 at the dealership.

I think I need this thing to hover around 1100-1250 to avoid this stalling issue.

My question is for those guys out there that have drilled small holes in the buttlerfly of the throttle body... How effective was this? How big was the hole? What did the idle end up being when the hole was drilled?

I know that there are mixed opinions on doing this, but the only other option is to send out the factory ECU and have at flashed for a higher idle for $500... That is a heafty price just for an idle bump. I would like to try to drill the throttle plate first, but looking for some guidance.

Thanks!

 

did you try this?
http://www.jimwolftechnology.com/wol...BILITY_FIX.PDF

it worked great for me.

 

And drilling a very small hole in the throttle plate worked for me real well .

 

if you felt like getting innovative, you could weld a flange on your plenum and mount a honda idle valve and control it with the FCON to have a flawless idle.

 

I would say drill 1/8 of and inch and then start going bigger untill the car idle, i think my setup is too close to urs...

 

I have the C2s and idle is fine at 9xx. My hoses are a little different from the JWT pdf, instead of the crank case breather I have an additional connection on the charge pipe to bypass the additional air.

Also make sure you don't have any vacuum leaks.

 

Suscribing...i Have The Save Problem

 

Id be curious to know what your vacuum is reading and how much it is flucuating

 

Cool Idea and costs nothing and easily reversable

 

I have not tried the JWT fix yet, but I guess that is worth a shot...

I think the biggest problem is the 1000cc injectors. Before the FCON was installed I was running 650cc injectors with a UTEC and the car would idle fine with the A/C on idling at about 900rpm (A/C off it would stall about 50% of the time idling at 750rpm).

For those of you who replied and drilled the hole... how big is it? vs. the new idle speed?

Thanks again for all the suggestions!

 

Now THAT is an interesting idea.

 

+1 ---Ya, that kinda turned me on too. Neccessity IS the mother of invention.

 

which 1000cc injectors are you using? I have the HKS 1000cc injectors and they respond great at low pulsewidths (thanks to the FCONs low impedence injector drivers and not having to use ballast resistors) and i was able to idle my car at 14.7:1 back when it had a stock idle speed. Once I put in the built motor with cams, the cams made it stall very often, luckily my 03 can be idle-up'd with the consult, to I believe 925rpm. After that, its flawless.

If you have lesser quality injectors, they may not like the short pulsewidths at idle, however with the cams there is no doubt that you will need to idle at 1000rpm or so anyway, so one thing at a time... you can see how the injectors respond once you get that rpm that you need.

 

my idle is around 750, but doesnt stall out. its like that when i was n/a, f/i, and then i sold my tt, and its still at 750. when i start it, its really high, almost at 1500, then slowly lowers 2 750 ish. any idea wtf is happening??

 

sounds like its working just fine.

 

Well... I ended up doing the JWT idle fix as well as drill a 5/32 hole in the throttle butterfly. The idle is right at 1100-1200 rpm and holds as steady as it did when the car was stock.

So I guess when done the right way this will bump the idle with out any side effects and is free compaired to a $500 ECU reflash...

 

glad to see it works now

 

I am glad the trickery worked. Did you get the dynochart I emailed you to all three of your emails?

 

if you have access, get the consult or cipher to raise it plus have a reflash for you idle done and it will double raise it.