Long story short, I dropped my car off at TPG months ago to get tuned and they are having trouble/stumped as to what is causing this issue, so I'm hoping someone here has some experience and or insight.
The ecu is not responding to any fuel trim changes or changes to lean out the car, it's running super rich all the time and no matter how much fuel they pull off the map it's still really rich. They've also said the car starts like normal with the injector scaling at 0 some how. They've checked all sensors, tried another stock ecu, had the injectors re cleaned, replaced the O2 sensor, and gone through just about everything to no avail. As a last ditch test, they tried a Haltech and all of a sudden it started responding like it should. So not really sure where to go from here as I really don't want to buy a Haltech for a stock motor bolt-ons Evo 9, as that just seems like overkill.

 

Based on the info you provided they either don't know what they are doing, are trying to con you into buying a haltech, or both. Months to get a tune is already a huge red flag though even without the other side of the story.

 

Here's a couple responses from them over the past few months regarding what was tested etc.

 

You need to provide more details about why you brought your car to them and what mods you have done to it. Otherwise its pretty hard to judge the situation. IMO though it sounds like you are being strung along. All that stuff should have taken a competent shop ~ an hour to do. That's my expectation anyway, not having a shop myself but knowing how long it would take me to go through all that. The story doesn't add up to me either. Fixed TPS but tried swapping it anyway? Any novice could open evoscan and just press the pedal and verify the tps is working or not. A shop should have the tools to put vacuum/pressure on the map sensor and verify its logging correctly. A "tuner" shop should have a dyno with a wideband which could be used to verify your wideband. They have a fuel pressure gauge on the car so what is this about maybe tearing down the fuel system? That earlier bit about the fuel lines being mixed up also sounded very implausible. Take the car somewhere else and get a second opinion.

 

Car was to be switched to E85/SD and tuned on the FP green, injectors and GSC S2's i just put on. But ya a lot of their responses seemed like things that could've easily been seen via evoscan. Ya the fuel lines thing seemed impossible as the car wouldn't have started to begin with if that was the case. There's a lot of what if's on their end but at the end of the day they seem to be pushing the Haltech. The problem with going to another shop, which would be Tscomp in this case as he's actually not too much further from TPG, is that he decided that it would easier to ignore all messages and emails instead of taking my business from the get go. Otherwise the car would've been there from the start.

Evo 9 Stock Bottom End/Head

FIC 2150cc Injectors

GSC S2 w Kiggly Springs

Fp54 Green w 4in Intake

Ported Intake Manifold w 65mm TB

Ported FP Manifold

Omni 4Bar Map Sensor

4in FMIC and Piping

O2 Dump/3in DP

 

Your mods seem pretty boiler plate, nothing I would expect to be particularly troublesome for an experienced ecuflash tuner. You might try just going over to TSCOMP and see if you can talk to someone. Bringing food probably wouldn't hurt either.

 

Ya overall it's a fairly simple setup/build which is why I don't understand why this has became such a difficult task. Here's the most recent update today, from this it seems like the Haltech is over riding whatever is causing the issue that's present with the stock ecu, well if there's an issue that is, so who knows

 

It would be good if other points of view weighed in, but it just seems to me like he lacks experience tuning the stock ECU.

 

Sounds like they are trying to sell you a haltech.

if it “runs fine” with the haltech all the hardware problems they pointed out are lies.

 

Thanks that's what I was trying to determine or figure out if there was something on the car setup wise I missed, relays or electrical etc