Originally Posted by
jpz_67
Hello all, looking for input on the tuned grp promo package. I have only had 1 grp motor ever and it was mugen ninja bo1a, I loved it. Strong smooth usable power but was only disappointed in 1 area, the runtime. I used the recommended pipe and ninja glow plugs but could just barely get 8 mins to a tank in a mbx5r. Is the grp tuned 21 in the promo kit really any better? I have read a lot of testimonials on how these motors get excellent fuel mileage, the same was with the ninja and I never saw it. I know there are a lot of variables but some motors have a reputation to get great fuel economy no matter what the conditions such as the v-spec. Not looking to get flamed but just some good, honest feedback. The price of the promo kit has made it more reasonable to try this motor out, they are on sale everywhere I shop. Also I would be dropping the promo kit in an mbx6 buggy and as some know the chassis is kind of a tight fit when it comes to pipe and manifold selection, so with this being said does the grp pipe and header fit without any major mods? Thanks .
all conditions are different and tracks as well ...i have not seen a grp rpomo kit that wouldnt make the 9 minute mark ...most going on 10-11-12 mark if proberly tuned ....i bought one purely based on what i saw at the track ....so far on breaming it in ...i have not been dissapointed and feel in my x2 i should get 10-12 minutes on 150cc if i have the tune right ....
Originally Posted by
jyfz2
you will love this motor and yes run time is excellent before i ran the grp i had run novarossi and a sirio and the way i drive is alittle heavy on the trigger finger 7.30 miniutes was all i could get no matter what i did. i droped the grp in the exact same car and was getting 10 min. no problem i could not believe it
i pitted the last part of the season for jyfz ...i was holding the stopwatch ...so i can vouche for the 9-10 minute mark with him running an
rc8 at the time