i was wondering why my car boggs with the mugen chip is cause i need to tune my car or what. i ran the chip for good 2 months or so, but now it just seems slower than before. i took it out and now iys running alot better. so i think im going to wait to put it back in when i go to the dyno.

 

when was the last time you tuned? eg spark plugs and oil?

t..

 

Running too rich probably is my guess.. I saw a 5whp loss all across the board with the mugen chip in my gsr before I tuned it..