WGA to.....

[DannyJoe]

i bought a nipple adapter to run through a coupler after hearing it would be better to run the wga too. currently its ran off the intake manifold. if it would be better to switch to a coupler which one would be the best source? i'm running a fmic, forge wga, ssafc and am about to hook up my aem wideband. anyone have any tips for setting up the A/F ratios? i've seen the different maps and was thinking of using the superstock and running roughly 8.5- 9 psi. sound like a good combo? heard to shoot for an AFR of 12:1, 11.0-11.5 for safety. any help is much appreciated.
also anyone use the aem to datalog with the ss afc? my ss afc has the orange wire i'm assuming is for the datalogging (version 2?)

 

[Tzar177]

i bought a nipple adapter to run through a coupler after hearing it would be better to run the wga too. currently its ran off the intake manifold. if it would be better to switch to a coupler which one would be the best source? i'm running a fmic, forge wga, ssafc and am about to hook up my aem wideband. anyone have any tips for setting up the A/F ratios? i've seen the different maps and was thinking of using the superstock and running roughly 8.5- 9 psi. sound like a good combo? heard to shoot for an AFR of 12:1, 11.0-11.5 for safety. any help is much appreciated.
also anyone use the aem to datalog with the ss afc? my ss afc has the orange wire i'm assuming is for the datalogging (version 2?)

I would run the nipple off the hot side coming off the turbo. Thats where mine is and the shortest routing

 

[DannyJoe]

i thought about that, thanks for the input.

 

[DannyJoe]

anyone else?

 

[43975]

Best option is to add a vacuum block to the brake booster line and run the hoses for WGA, Boost gauge, BOV, and Split second all off there. That why they all see the same numbers and its a solid line.

 

[DannyJoe]

i'm liking the idea of the vacuum block, but i'm still considering running the wga from the coupler right after the turbo? good idea or bad? i thought the intake mani would be a good place for the ss afc since its closest to actually entering the engine? also good idea bad idea?

 

[dmention7]

One thing I've always been curious about when running vac lines from a pre-TB source, is how much difference in pressure can there be before and after the TB when at part-throttle, and what are the effects on tuning?

Past about 3500rpms or so, it doesn't take a whole lot of throttle to get into boost, and if there is a pressure drop across the TB, it seems that could wreak some havoc on your ability to tune for smooth and consistent part-throttle conditions.

For a wastegate, I don't see an issue, since you'd just be affecting when the WG opens and closes, but for a MAP sensor for engine management, etc.... it seems like that would be problematic.

 

[Wagonbacker9]

Best option is to add a vacuum block to the brake booster line and run the hoses for WGA, Boost gauge, BOV, and Split second all off there. That why they all see the same numbers and its a solid line.

not exactly. giving the WGA vacuum serves no purpose (and could very well contribute to diaphragms wearing out), so putting it on the charge pipe is really better.

 

[hornsfan10609]

Would running the vac line from the WGA to the intake pipe and blocking the stock line help anything with a stock WGA?

 

[Wagonbacker9]

Would running the vac line from the WGA to the intake pipe and blocking the stock line help anything with a stock WGA?

I read this 3 times and I still don't understand.

 

[hornsfan10609]

You say running the vacuum line from the wastegate to the charge pipe is better than running it to the intake manifold like stock?

 

[Wagonbacker9]

You say running the vacuum line from the wastegate to the charge pipe is better than running it to the intake manifold like stock?

yes. because there is no use in supplying vacuum to the WGA, only boost.

 

[hornsfan10609]

So if i run the vac line from the wastegate to my stock intake tube and plug the open vac line will I gain anything?

 

[Wagonbacker9]

intake tube, after the turbo you mean?

actual gain? possibly reliability of your WGA, but thats about it. boost may be more consistent...

 

[Tzar177]

So if i run the vac line from the wastegate to my stock intake tube and plug the open vac line will I gain anything?

Not intake. You wanna hook it up to the hot pipe or cold pipe cuz wastegate should only see boost pressure. You don't get that from the intake

 

[JasonBourne]

can you put a pic or diagram of that connection??

 

[hornsfan10609]

intake tube, after the turbo you mean?

actual gain? possibly reliability of your WGA, but thats about it. boost may be more consistent...

Not intake. You wanna hook it up to the hot pipe or cold pipe cuz wastegate should only see boost pressure. You don't get that from the intake

I think i'm gonna do it, it won't be noticeable but neither is anything else i've done to the car so far. Thanks for the info guys.

 

[JasonBourne]

You say running the vacuum line from the wastegate to the charge pipe is better than running it to the intake manifold like stock?

Can anyone put a pic of this wastgate connection???? please

 

[yudkib]

you know, theres something that looks like a nipple on the bottom of the OEM SMIC. it has a clamp and vacuum cap on it, and i got rid of my SMIC before i could inspect it further.
does anyone know anything about that?

 

[Tzar177]

you know, theres something that looks like a nipple on the bottom of the OEM SMIC. it has a clamp and vacuum cap on it, and i got rid of my SMIC before i could inspect it further.
does anyone know anything about that?

Just looked at my stock smic and yes it appears to be a vac nipple. I reckon if you still use the stocker that you can hook up wastegate to that