As what Jordan said, you will be a custom tune to run your stock injectors with the manifold. You can revert back to the stock file to drive the car but all mods that are tune required will have to be reverted back to stock.The tune has to be specific for the investor size being used. Contact your tuner to have him make an adjusted tune.
Tough to say. If they've been modified beyond the point of working in their original capacity then you're probably SOL.I modded the vac hoses for the 18 mani. Will they work the same when I put back the 15 mani ?
