Ultima GTR ls7 engine 650hp

[BILLGTR]

Failed twice IVA test on emissions too high. Anyone have a cure for this. Noted emissions an issue with Ls7 engines

[rottenegg]

Fit the biggest cat(s) you get in there.

[Steve_D]

Not a lot of info to go on there Bill.
Would help if you told everyone the specifications such as what ECU are you running, if GM then what fault codes are present, as already mentioned what cats are fitted. In your email you mention big cam and big overlap both of which are red flags for emissions.

Steve

[BILLGTR]

Guys mucked up my wiring for my wipers, long story short, disconnected some my switches to pull back wiring when I installed my DC Electronic Micro steering system. Scared I cut any of the loom.

Mental block can't figure out how I connected the wiring. Using the push button switch for high-speed and the raptor switch for low speed. Old brain getting tired.

Macgracing sorted all the issues I had pre IVA. Taxed on March 2025.