Plans are to remove the PFC and install a sport 1000 on a FD.
FFE hall sensor
LS coils
flex fuel sensor.
850 primary
1600 and 680 secondary
looking for 425/450 rwhp
going premix.

Any suggestions or tips, post them please.

want to use the stock tech and water temp and oil pressure gauges.
What to do with the stock harness?
ECU? any problems removing it?

thx.

 

You can use a patch harness made by haltech that will make the haltech plug right in to factory wiring. You will need to modify it for the AEM coils and the FFE trigger. A better option would be to have C.ludwig make you an engine harness specd to your engine and needs. Thats what I did and am very happy with it.

I would run the AEM ign-1a coils and ID 1000 primaries and a set of ID 2200 secondarys. Forget the LS coils.

 

the stock harness on this car is junk. Reason for going with the haltech.
looks like going with aftermarket water temp and oil pressure gauges will be easier.


m

Thx

 

If it is in the budget the racepak iq3 is an attractive option as it can display all of the info the ecu sees.

BTW, I should have mentioned the patch harness is for the FD, I Am fairly certain they make one for the S5 FC as well.

What car is this going in?

 

No need to go with aftermarket gauges. It's easy enough to make the stock stuff work. The oil pressure sender connects through the front harness, so it's not even effected by removal of the emissions harness. You will need to make provisions for the water temp sender, trans loom, and cooling fan switches. The Haltech will drive the tach. I can put together a plug-in replacement harness. Just say the word.

 

Noticed the oil pressure is on the harness that will be left in. good.

fan, haltech

trans harness??? reverse and speed sensor. important....

oil pressure gauge?? can live without.

what is the harness you talk about.

 

so basically if the engine harness and ecu is removed everything will work correctly except, speed O, water temp and reverse lights. and OMP

Haltech will do
cooling fans
injectors
coils
boost control
stock tach
shift light


???

 

email sent.

thanks.

 

THX guys for the help. Looks like everything is working as it should be.

started right up and made 1000hp. now to tune the power down to 400hp.

thx
chuck

 

made progress yesterday. Put the 7 on a dyno pak. Tuned on pump gas. went for very low 11 afr on 93 oct. pump gas. Had 1/4 tank of fuel. Then added 10 gallons of E85. ECU showed fuel percentage was 50%. Car started and idles perfect. The fuel compensation table was 95% spot on. Started to make some pulls on the E50. AFR was high 10s. Leaned the fuel compensation table to get a 11.5 afr. was easy as making a cake. Made a few pulls just to verify. All tuning took under two hours. The tune could have been done in a hour but we took breaks to talk about our plan of attack. slow and easy!

I like how the tune can be rich for pump gas and a bit leaner when running e85. makes things really reliable as a daily driver and occasional track car. The way it's set up, the more the e85 in the tank the leaner the afr is going to be. Very cool! I did zero the compensation ignition map just to give me a bit more safety barrier.

Today the car started to run on one rotor. Went to check it out and found the NGK V-power plugs to be worn out. The leading plug gap was over .060 th. Trailing plug gap was still within spec. Installed new v-power plugs and car started and ran as it should. Plugs were 4 to 5 month old on the power FC with waste spark. Going to monitor the plug wear with the direct fire and see how things go. should have installed new plugs before the tune but the car started, idles and drove so good before we put it on the dyno, so we just left the old plugs in during the dyno time.

Over all the flex fuel sensor is the way to go.

850 primary high impedance
1600 and 680 primary low impedance ran through a FJO injector driver.
Transition was at zero boost with dis-enrichment set a 1.5 transition was very good.
Primary Hold.
LS7 coils with 3.5 dwell

 

Had one of the LS7 coils go down last night. This sucks. Two or three other guys running these coils with no issues. Maybe just my bad luck.

switched coil connectors around, plug wires to verify.

 

That sucks.

That was your reasoning for going with the LS7 coils as opposed to the AEM coils?

 

Hate to say I told you so

 

You also told me to go ID injectors. and have some do my harness. and...

What exactly did you tell me to do? and for what reason. just because. Parts go bad, part of building a car.

I've read a few threads where guys were disappointed going with the AEM coils. Were they "right"? it's all a opinion.

 

^ I know, I was just making a joke thats all.

Hope you get it sorted out and back on the road.

 

Reason for going with the LS7 coils..

Cost
know a few guys running them with out issues
coil for the HP level

Can't remember reading about these coils failing. Have read and heard these coils will auto discharge but that's from to much dwell time.

Put the coils under the upper intake where the stock coils were. Maybe they cant take the heat. The other guys put there coils on the wheel well.

 

Just a small update.

Things are looks up. We installed a second wideband. Works good. Feel better logging two AFR from two different widebands. Something I'll be doing for now on.

We also went with some Accel ignition coils we found locally. From AutoZone.... There the D585 truck coils with the heat sink on the back.

Thanks to Chris, got the speedo, reverse light, oil pressure and coolant gauge working. Also the low coolant buzzer is off. Thanks a bunch!

The Flex Fuel sensor is working great. No matter what the percentage of e85 is in the tank, the car starts and idles and drives as if there was no change in fuel. Haltech did great with the compensation numbers/map.

 

I now have the connectors in stock to make jumpers for the coolant buzzer. That's something I'd been overlooking in the FD harnesses and it'll be standard going forward.

 

We changed the secondary injectors from 1600 and 680 to a single 2200 Siemens.
Injectors seem to work great.

850 primary
Transistor is at ZERO boost.

No issues with transition from 850/2200.

Few weeks ago with the old injector set we had it on the track. Easy pass just to see how things were going.

11psi it went 12.7 at 111mph with a 2.2 60 ft.

3$ V-power NGK spark plugs for the win!....