i have a p28 and i chiped it with a kit i got off ebay. but as far as i can tell the rom chip doesnt work right. my car guzzles gas with it and there is no vtech.

the chip i need is for a 88-91 jdm b16a. runs like it has low miles. my car is an everyday car so i dont need to push a lot of fuel. id like the vtec around 4200-4800 rpm range