| Author | Message | ||
     Easyrider |
http://www.twinmotorcycles.nl/artikelen.asp?cid=6& aid=132 | ||
| Buellrain |
Nicely done, got my stacks with some other bits last week, called Martin to confirm they had arrived and he said to remove the lower air box, the rest was self explanatory, took about 15 minutes. Noticed the difference straight away, bike seems smoother but pulls harder.. Great product!!!! Thanks TwinMoto….. | ||
| Daniii |
Buellrain, what mods did you do to the fuel map? | ||
| Slaughter |
I love the pics! Even got skinned up hands - CREDIBILITY! | ||
| Buellrain |
Daniii, I think when the guy's at Twinmotorcycles developed the stacks they did them originally off a stock ECM and got gains, however as you can see on their website they recomend a map. My bike has a Erik Buell Racing ECM, Drummer pipe and a K&N, this set up was good but the stacks seem to take it to the next level... Not sure if there are other guys on here with the stacks but if so I'm sure they will agree that they seem to untap a little more out of the motor.} | ||
| Littlebutquick |
had mine in from the 1st batch made and have only taken them out for a quick polish worth every ££££££££££££££££ | ||
| Redbat |
No doubt about it. They made my CR run even stronger with my Barkers slip-on, Erik Buell racing ECM, and stock air filter. Polished my stacks too, before installing them. Have to agree with Littlebutquick, worth every penny. | ||
| Xtreme6669 |
Are the shipping issues all worked out? I have been wanting a set but the shipping issues had me waiting it out | ||
| Zac4mac |
Dris - why did y'all take the bottom tray off? Seems like a lot of extra effort if just doing the stacks. You can pop the clips and swap stacks with the bottom on BTW, the results look great, it may take a while but I'll be ordering a set for Loretta. Z | ||
| Cowboytutt |
Hey guys, I agree totally that the stacks work and "take it to the next level" with my Erik Buell Racing ECM, K&N and Barkers. That being said, I would be very hesitant to use the cheaper TNT/US Postal Service option. My best friend Trider did not get his original order for almost ninety days. God Bless Martin at Twin Motorcycles for sending a second set DHL that got here in 3 days. 3 DAYS! Low and behold, after Trider filled out the same form 4 times with the USPS (once Martin gave him an invoice), his original stacks showed up a week later (sale already pending, sorry guys!) If your going to order these, I would strongly suggest a group buy using DHL and splitting the shipping costs. Then the receiving party ship the stacks to the rest of us in the U.S. Great product, not Twin Motorcycles fault for US Customs and USPS blunders! -Tutt | ||
| Budgolf |
Can Twin reprogram the stock ecm for these stacks? | ||
| Cowboytutt |
Yes. | ||
| Pmjolly |
Cowboytutt, He kept both sets and only paid for one? Now he's selling the second set? I think I would return the set I did not pay for. Maybe I am misunderstanding something. | ||
| Cowboytutt |
No, my friend is just shipping them to someone from BadWeb directly once they pay Martin and Driss. -Tutt (Message edited by cowboytutt on February 28, 2011) | ||
| Cataract2 |
What do these do for you? | ||
| Trider |
Pmjolly- yes, you are misunderstanding. Once my missing stacks approached the 3 month mark, still MIA, I emailed Martin requesting another set and he shipped them right out; I received those in about 3 days. A week later, here come the "lost" ones. No information, no progress report... no warning, no we're sorry... nothing. Just the package. Why were they lost? Some yahoo at customs slapped a customs tracking label right over the shipping info. Now, you might think that the good people at the US Post Office would be sharp enough to figure that out. But nope. That's now 'lost mail'. Despite the fact that it is very much not lost, it took them 2 months to match the paperwork up to the tracking number and decide to ship it. I guess problem solving skills are not high on the job duties list. Cataract2- stacks provide a smoother passageway for air, particularly at high volumes. The 'pinch point' (air entry) is wider and further removed from the throttle bodies, offering better flow characteristics (at high volume). In theory, you get more air faster to the throttle bodies. | ||
| Easyrider |
Look here for the development of the stacks: http://www.twinmotorcycles.nl/artikelen.asp?cid=6& aid=76 | ||
| Velocity |
Hey, for those of you using the stacks on the street are you running with or without the inner air box cover? Any pros or cons? Scott | ||
| Easyrider |
Scott, Keep the inner airbox cover on please... | ||
| Velocity |
Dris,thanks will do! Scott | ||
| Littlebutquick |
i have test cover on cover off at the dragstrip many times and much better results with inner air box cover on .im sure Dris has tested on the dyno and must have similar results | ||
| Fresnobuell |
Someone please do a back to back dyno run with the stacks off then installed. I would like some unbiased figures as I have a source which says velocity stacks aren't worth it on our motors after testing several variations. | ||
| Littlebutquick |
back to back testing on the strip a good 500 hundreds of a second and thats real life testing put it this way you can spend hundreds on a exhaust and gain about the same if your lucky this is cheep HP | ||
| Fresnobuell |
back to back testing on the strip a good 500 hundreds of a second and thats real life testing put it this way you can spend hundreds on a exhaust and gain about the same if your lucky this is cheep HP Does it gain a few ponies at the top at the expense of the mid-range? that's where a dyno plot would be helpful. | ||
| Littlebutquick |
Dris can tell you that or show you  | ||
| Easyrider |
read this first: http://www.twinmotorcycles.nl/artikelen.asp?cid=6& aid=76 I have so many data available I can understand that somebody else his data from another dyno would work better. Here is a graph, bone stock versus stage 1 intake stack tune, stock european exhaust with K&N filter without tune for the stacks  | ||
| Trider |
I'll probably be doing a before and after dyno pull on mine, once I install them- going to re-wind the stator first. Another poster here will also do a before and after soon. All reports are that these stacks noticeably increase seat-of-the-pants-feel and track times. I'm looking forward to installing mine! | ||
| Fresnobuell |
Here is a graph, bone stock versus stage 1 intake stack tune, stock european exhaust with K&N filter without tune for the stacks Okay, so am I crazy or is the statement above totally contradictory? Tune or no tune? BTW, I hope it's Easy's English cause his website has several other inconsistencies if you take the time to read it carefully. | ||
| Easyrider |
Fresno, The bike has a tune for the stock exhaust and K&N filter. We then installed the Stacks and kept the stock tune and made the dyno run I still need to post a graph with a stack tune for that same customer, only i need his bike here for that. So the graph shows a TUNE for a stock exhaust with K&N filter and then the stacks installed. What it needs is a graph with a tune for the stacks, stock exhaust and K&N filter. When it warms up i post it, then he comes here with the bike for that. I like to compare it on the same bike. | ||
| Fresnobuell |
So in ur estimation what is the hp gain attributable to the intake stacks? |
