Stef's 7AFTE Tech/Project, First Dyno run pg16 Options

[presure2]

^ so if the wideband was in question.....why not just throw it on the the dyno and end all doubt?

she was too lean on the 315's which is why she got the 370's, which she just installed.

the dyno also wont tell her anything about her idle and part throttle a/f ratio, which is what she is talking about right now.

[hurley97]

I got the FIC because I realized it's going to need to be more finely tuned, not to fix the idle. The AEM FIC has a 21x17 map and can control ignition timing as well, and from what I've seen is compatible with Vista more importantly.

I had a high idle because the intake plenum gasket was messed up, that's ok now.

[FunkySR]

hey steff...sorry havent pm'd u pics of my catch can yet.

if u need help with FIC wiing let me know. i think i posted up some notes.

you need to run 4 wires into the engine bay for the injectors. Also the o2 function is fussy with the 7a so don't bother...let the stock o2 deal with that. Finally, you only have to intercept the crank sensor on the (-) side and tap the (+) side.

[6strngs]

hey steff...sorry havent pm'd u pics of my catch can yet.

if u need help with FIC wiing let me know. i think i posted up some notes.

you need to run 4 wires into the engine bay for the injectors. Also the o2 function is fussy with the 7a so don't bother...let the stock o2 deal with that. Finally, you only have to intercept the crank sensor on the (-) side and tap the (+) side.

couldn't you just tap into the injector wires at the ECU?

[Dr_Tweak]

hey steff...sorry havent pm'd u pics of my catch can yet.

if u need help with FIC wiing let me know. i think i posted up some notes.

you need to run 4 wires into the engine bay for the injectors. Also the o2 function is fussy with the 7a so don't bother...let the stock o2 deal with that. Finally, you only have to intercept the crank sensor on the (-) side and tap the (+) side.

couldn't you just tap into the injector wires at the ECU?

The 7A is batch injection (fires two injectors at once), I'm assuming the FI/C changes it to sequential and that's why he did it that way.

-Doc

[FunkySR]

hey steff. here are the pics of the catch tank i have. I want to replace it with a breather tank with two inputs and a filter.

[Culpable04]

FunkySR
here is a discussion about catch can set-ups

Catch cans

if I'm not mistaing you said you're going for a set-up similiar to number 4 right ?

[hurley97]

I think I get the general idea of what a catch can does and how it needs to be setup, I'm just not sure what works best for the 7AFTE.

Thanks Jay for the pictures. Is this the revised setup or the one you mentioned you were having trouble with?

I was going to use the straight breather line that goes from the intake manifold to the crankcase (next to the PCV line, it's just a hose) which right now is capped off at the manifold and there is a vent hose going nowhere from the crankcase side. I would put the catch can between the vent hose going nowhere from the crankcase side to the intake filter before the turbo. That leaves the PCV alone.

[6strngs]

The PCV can be left alone because of it's one-way check valve. So, you can't pressurize the crankcase under boost. However, I'm pretty sure the crankcase needs to be under a vacuum in order to properly "suck" the vapors out of it. Which is why I believe the best way is to run the one hose from the crankcase to the catch can, and the other back to the intake. actually, ideally, would be to run both the PCV and crank vent to a catch can, and have a 3rd outlet to the intakte. then you'd catch all oil from going into the combustion chamber and lowering the octane of your gas and promoting detonation.

the worst thing though would be to pressurize the crank case, then all your seals and gaskets will start going out... I'm guessing that's why my car happened to spring about 10 million different leaks after I turbo'ed it...

[hurley97]

So after the injector switch I no longer get a misfire code from cyl 1 on cold start.

Yesterday Manny welded a new bung in my exhaust to move my wideband further back. I started playing around with the tuning a little and I can get the afr just about normals sometimes so I think it's all in the tuning. Once I feel more confident in the wideband readings I'll try to tune it better. I have realized more and more that the SAFC is not going to cut it for proper tuning. It takes out too much fuel at partial boost and throws in too much at low throttle. I'm sure I could get it just about good enough but even that's not good enough for me. I drive the car everyday and it's getting very expensive only getting 20mpg (down from 25mpg with the 315cc injectors and pretty good tune) and having to use 93 octane.

I have yet again developed an exhaust leak at the manifold, the whole exhaust is hanging off the head studs and loosening them after a few weeks. I need to devise a manifold/turbo stay.

Other than that, no major problems yet... knock on wood.

This post has been edited by hurley97: Oct 13, 2008 - 7:07 PM

[presure2]

I have yet again developed an exhaust leak at the manifold, the whole exhaust is hanging off the head studs and loosening them after a few weeks. I need to devise a manifold/turbo stay

again, your manifold is warped, thats why the bolts are working loose over time.

[playr158]

there are no reliefs cut into your manifold flange are there? probably should look into a new manifold + one with reliefs in it. (also what nuts are you using? try some deforming thread lock nuts)
Glad to see the wideband moved back

This post has been edited by playr158: Oct 14, 2008 - 6:44 AM

[presure2]

there are no reliefs cut into your manifold flange are there? probably should look into a new manifold + one with reliefs in it. (also what nuts are you using? try some deforming thread lock nuts)
Glad to see the wideband moved back

dan, her manifold has no relief cuts, its the JGS log manifold, we cut the t3 flange off and welded on the t25 flange, which is why im saying the manifold is prolly warped.

she is using the stock toyota split locking nuts IIRC.

[hurley97]

Manny and I moved my wideband back behind the flex pipe, that should be ok... until the next problem.

The AEM F/IC is installed and working. Just need to do some fine tuning for a while.

I took the manifold off and brought it to a machine shop to straighten. It was a little off, you could put it on a flat surface and rock it side to side. The guy made it flat for me, I double gasketed it and put it back on. One of the guys at work helped me make a bracket to support the manifold/turbo. Only time will tell if the combination of the three will solve my recurring exhaust leak problem, I can't imagine what else I could do if it comes back.

This post has been edited by hurley97: Oct 21, 2008 - 9:33 PM

[6strngs]

Manny and I moved my wideband back behind the flex pipe, that should be ok... until the next problem.

The AEM F/IC is installed and working. Just need to do some fine tuning for a while.

I took the manifold off and brought it to a machine shop to straighten. It was a little off, you could put it on a flat surface and rock it side to side. The guy made it flat for me, I double gasketed it and put it back on. One of the guys at work helped me make a bracket to support the manifold/turbo. Only time will tell if the combination of the three will solve my recurring exhaust leak problem, I can't imagine what else I could do if it comes back.

wouldn't double gasketting cause leaks?

[FunkySR]

Manny and I moved my wideband back behind the flex pipe, that should be ok... until the next problem.

The AEM F/IC is installed and working. Just need to do some fine tuning for a while.

I took the manifold off and brought it to a machine shop to straighten. It was a little off, you could put it on a flat surface and rock it side to side. The guy made it flat for me, I double gasketed it and put it back on. One of the guys at work helped me make a bracket to support the manifold/turbo. Only time will tell if the combination of the three will solve my recurring exhaust leak problem, I can't imagine what else I could do if it comes back.

goog good.

do you wanna see my latest map to compare? if so email me. How did you wire up your ignition.

[Culpable04]

does the AEM allows to have 2 different maps ? like a 6 PSI map and a 15 PSI map ?

[FunkySR]

no. You can map boost against RPM to whatever boost you like. Eg I have mapped mine to something like 30PSIA which is like 15psi but my EBC is set to 10psi...si even if i get spike i will be ok as i have enough fuel to cover that.

[hurley97]

Manny and I moved my wideband back behind the flex pipe, that should be ok... until the next problem.

The AEM F/IC is installed and working. Just need to do some fine tuning for a while.

I took the manifold off and brought it to a machine shop to straighten. It was a little off, you could put it on a flat surface and rock it side to side. The guy made it flat for me, I double gasketed it and put it back on. One of the guys at work helped me make a bracket to support the manifold/turbo. Only time will tell if the combination of the three will solve my recurring exhaust leak problem, I can't imagine what else I could do if it comes back.

wouldn't double gasketting cause leaks?

If I used two of the metal kind I had on there I'm sure it would since the crush part around the openings face outwards and probably wouldn't crush well against each other. I used the metal on I had and an aftermarket FelPro made of the composite, non-metal headgasket type stuff.

goog good.

do you wanna see my latest map to compare? if so email me. How did you wire up your ignition.

e-mail sent

this is pretty much what I e-mailed Jay, it just explains how I have my F/IC set right now:
I attached my current map, it’s just a calculated base map I made a few minor changes to for the time being. I haven’t really had a chance to drive around with someone and really tune it. My max boost even when it spikes is about 13psi so I mapped it at a max of 27psia, I also based it on the 315cc injectors to start out a little rich and work my way to a good tune, but it actually seems pretty good for the most part. It still hesitates from too much fuel if I hold out 10psi for a long period of time. I’m still working on it.

[hurley97]

So I had a little problem with a crap load of smoke at higher boost levels. Actually while I was tuning and Dustin was driving, after hitting 14psi a few times it would throw smoke clouds out the back, then holding out anything over 10psi some smoke would come out. We pulled over to find about 1-1/2qt of oil shot out of the small vent tube from the valve cover. Added oil, capped off the tube, drove it nice and easy to work the next day.

I installed the catch can in hopes to help the situation. I put it from my PCV to the catch can, and front the catch can to the intake. Capped off the second small vent hose and sources from the intake manifold.

Again I took the car to lunch and drove it hard, right about 13-14psi clouds of smoke out the back. Drove it nice back to work. Manny's theory was the positive pressure going to the PCV caused some to leak by it and pressurize the crankcase forcing oil out the vent hose. I talked to some techs at work about the PCV and someone suggested I cap off the PCV and see what happens.

So I capped off the PCV, started the car, smoke like I'd never seen before just at idle. Reconnected things the way I had it and the smoke seemed to settle down but there was still something wrong. I had Dustin come pick me up from work, we went to go see Manny, Jenn, and baby Randi in the hospital, I drove the Solara to work in the morning.

Yesterday after work, me and two master techs were discussing my vent routing and the problems with the way it was. It was determined that my intake itself at the filter was not creating enough suction to open the PCV at all, so the pressure would just build up and finally burst at 13-14 psi. It is normal for the crankcase to build up some pressure, thats why it needs to be adequately vented. My system just needed more vents because it built up more pressure faster. We hollowed out a PCV valve and reconnected everything the way I had it, but instead of capping the hose I originally had going nowhere, we took the cap off and put another hose going nowhere. Eventually I guess it should have some sort of filter on the end or just T it into the catch can line.