c.d.i. pro's and con's?????????

[formula1020]

whats the pros and cons of an aftermarket c.d.i. box i see they all say advances timing, and 1,000 more rpm rev. will this affect the reliablity of my quad in anyway?

[twain68]

Good question, thinking that myself, along with the Fat coil and the 6 degree advance key.
TIA!
T.C.

[glwitmer]

it may affect how your quad starts. make sure to have a fully charged battery.

[oleboy87]

yeepp some say that it makes the quad hard to start. but other say that they have been pleased with them... its suposed to raise rpm's, give a hotter spark, and advance the timing..

[boosted3g]

I got one from RMstator and it does everything it says. I didnt notice a problem with starting and it does make noticable power. Response is what i noticed most though.

[oleboy87]

i think there was a thread about the amr rev box and the coil to go along with it and there were great reviews on that one...

[hornetgod13]

Originally posted by oleboy87
i think there was a thread about the amr rev box and the coil to go along with it and there were great reviews on that one...

I went with AMR Racing for both the REV Box and Monster Coil. Just installed them both. No complaints yet.

[my88r]

my sparks cdi i had. i didnt really see a big gain. just hard to start. im running the stocker now.:D

[glwitmer]

I got a prom com for mine and other than the hard starting i noticed a big difference in throttle response i wouldn go back to my stock one again

[Brauap]

Originally posted by hornetgod13
I went with AMR Racing for both the REV Box and Monster Coil. Just installed them both. No complaints yet.

Did you see/feel any difference? Would you recimend it?

[glwitmer]

yea id def reccommend it. I noticed a big diff. I noticed the throttle response was a lot better and it helped with bottom end torgue

[Leadfootracing1]

I had a WB rev box, it was just a xr250 box, still had the honda pt# on it, and it left me stranded on the top of a mountain in CO, put the stocker back in to get me home. Now I run a Big Gun over-rev with no limiter and a nice advance, I have had no problems with it! I can start in reverse, and no reverse rev limit either.
But I have been looking into the AMR combo. is the AMR box smaller than the factory one?

[hornetgod13]

The AMR Stage 3 Rev Box I got made the motor difficult to start and once it did start the quad would misfire every 3 to 5 seconds and wouldn't idle with out backfiring and dieing. I put the stock CDI back in and it ran and idled fine.

I notified AMR Racing of the trouble I had and they admitted that their boxes were very "moody". They sent me a ProCom Rev box at no extra cost. The ProCom Rev box works fantastic and I would recomend it if you're going to get one.

[X400EX]

I'd like to know which one doesn't affect starting? Here in canada, winters are cold...

Thank you.

[hornetgod13]

The ProCom Rev Box didn't hurt cold starting. In fact, it helped.

[glamiskid395]

id like to know the answer to because when im climbing some of the steeper and softer dunes at glamis, i top out in second but thrid bogs down way too much.

when i changed the gearing 13t front and added the +6 timing key i was able to go into 3rd without any bogging.
but i would still like to get a CDI that doesnt advance timing, just gives more RPM

[hornetgod13]

Originally posted by glamiskid395
i would still like to get a CDI that doesnt advance timing, just gives more RPM

I think the Curtis Sparks Rev Box just raises the rev limiter and doesn't alter the timing.

[CSR400EX]

Originally posted by hornetgod13
I think the Curtis Sparks Rev Box just raises the rev limiter and doesn't alter the timing.
my old 400 had a Sparks rev box, and i noticed better throttle response, and a raised rev limit. i think theres is pretty much just a hotter spark.

[1Fun400EX]

has anyone every heard of or used an SRP cdi they sell them on magicracing.com just wondering if there any good im thinking about getting one