TT chip and octane

[Shimy87]

Eric says chip should be fine on 91 octane at 15 lbs boost. Going to put everything back to defaults and start from scratch. Going to try to get powerlogger working, that would be a huge help also

[Steve Wood]

yes, it would. 

Remember that a TA49 does not begin to outflow a stock turbo until it passes about 18 psi on a regular car with non ported heads, etc.  It also may not spool quite as fast as a stock turbo given equal converters.

[Shimy87]

Had a little time today dug into cruise not working. Prior owner had a checkvalve in backwards to no vacume to it.....fixed that and cruise works great. Thought maybe I would get lucky and that check valve was causing my knock issue...nope. if I run her at a steady 7-8 lbs of boost I can watch the SM slowly lean down until knock starts. I checked fp rise before and it was good.. Its obviously sucking in un metered air from somewhere but I can't find it. I have covered this motor in carb cleaner to the point of being seriously concerned about it starting on fire and no rise in rpm? I'm running out of things to check. I was told it had 60 lb injectors but maybe they are not? They are Moto....someth ing, I can't read the rest and the only common numbers on them are INJ- gas-006. Assuming if they are smaller injectors the ECM is thinking its sending the correct amount of fuel but its not enough so it leans out???

[Steve Wood]

Are you monitoring fuel pressure while you have your foot down to see if it stays up all the way?  I am not sure it is sucking in air but it is possible.

If you are running 10 psi of boost, then pressure should set on 53 psi until you lift.  If your boost stays on 10, your fp stays on 53, and the o2s dwindle down below 700, it sounds like an unmetered leak unless the maf  numbers drop way off during the run.

[Steve Wood]

Need a pl log along with fp

[Shimy87]

Tried to hook up PL and when I turn they key to on but not start car the SM just jumps numbers all over with O2 and knock readings constantly changing...... .I think the pl is junk unless you need to do something special with these new round SMs

[Steve Wood]

Not familiar with the new ones but...I would guess the contacts on the ecm are not clean enough

[Shimy87]

Doing some research, evidently there is some capisitor mod that needs to be done to an older logger ( can't find any solid direction on it) and then a reflash to get the SM G to work with it. I have a post in to Eric asking whats up.

[Steve Wood]

 

[Steve Wood]

Btw, just hook logger up and not the scanmaster...t hen you can use your laptop and record some logs to see what is going on....

[Shimy87]

Never thought of that, I can keep the sm hooked to orange wire so it will work also. 

I did figure out I do have 60 lb injectors so that theory is out

[Steve Wood]

yeah, it would not have the right numbers at cruise if that were not the case.

[SuperSix]

I attached the receipt for the chip - it should be correct for the setup.

[Shimy87]

Thanks Mark, yes Eric got back to me and said it should work, just a bit lower on boost. Getting some pl issues sorted now and then will get knock issue sorted

Its all coming together, getting headliner delivered today and will have all interior restoration parts on hand to complete interior!!

[Shimy87]

Update.....thi s power logger is junk so no logs to see. Hooked up fp gauge and tested. Cruise fp is about 41 on gauge, leaving it in 3rd and run steady 5 lbs boost for a long run, fp stayed steady about 47-48. Sm numbers move up and down and it starts to read knock...as high as 9. Then ran a steady 10 lbs boost, fp runs up to 51-52 , sm reacts the same.

New plan is to pull computer with logger out of my car, an old style SM came with car so hopefully that works and I will see if I can get a log to look at. 

I had the windows down, I know what knock sounds like and if it really was pulling 9 degrees of timing I would think I would have heard the rattle. I did hear it for just a second on in the middle of the long 5 lb pull but it went away right away.