Dturn Posted March 4, 2019 Share Posted March 4, 2019 Hi All, Anyone have there pcm calibrated by whipple? This would be on a 496Ho. I am curious if it was money well spent. I realize I would have to reprop which I plan to go to a xr prop set once I get a rpm baseline with the calibration. I posted the line below! https://whipplesuperchargers.com/index.php?dispatch=products.view&product_id=52 Quote Link to post Share on other sites
soldier4402 Posted March 4, 2019 Share Posted March 4, 2019 if your looking for performance help I would suggest trying offshoreonly.com. Much better site for that. Quote Link to post Share on other sites
BajaDriver Posted March 5, 2019 Share Posted March 5, 2019 On 3/4/2019 at 7:15 AM, Dturn said: Hi All, Anyone have there pcm calibrated by whipple? This would be on a 496Ho. I am curious if it was money well spent. I realize I would have to reprop which I plan to go to a xr prop set once I get a rpm baseline with the calibration. I posted the line below! https://whipplesuperchargers.com/index.php?dispatch=products.view&product_id=52 Not whipple but Arizona Speed and Marine on a 7.4. They do the same thing. Best money spent was on a labbed prop, then the ECU upgrade. Once you get your prop labbed you will understand. Silky smooth operation and 3-4mph increase, better holeshot, cruise etc. This being done on my Baja. Quote Link to post Share on other sites
Dturn Posted March 5, 2019 Author Share Posted March 5, 2019 47 minutes ago, BajaDriver said: Not whipple but Arizona Speed and Marine on a 7.4. They do the same thing. Best money spent was on a labbed prop, then the ECU upgrade. Once you get your prop labbed you will understand. Silky smooth operation and 3-4mph increase, better holeshot, cruise etc. This being done on my Baja. Where did you get your prop/props labbed? And you probabaly want to figure out a baseline rpm before you spend deer on a prop. Correct? Quote Link to post Share on other sites
soldier4402 Posted March 5, 2019 Share Posted March 5, 2019 11 minutes ago, Dturn said: Where did you get your prop/props labbed? And you probabaly want to figure out a baseline rpm before you spend deer on a prop. Correct? Try BBlades.com. But yeah anything performance your going to want to get baseline and work from there Quote Link to post Share on other sites
MonkeySeaII Posted March 5, 2019 Share Posted March 5, 2019 I had my props labbed at BBlades. I gained some improvement in the mid-range but nothing on the top end. I don't know what boat you have but the Chaparral hull is not like a go fast boat hull. They run "wet" and deep in the water. They do not have the kind of lift that a go fast has or a pad that a go fast gets up on. If you look at a Velocity which has a pad, at high speed, the only thing in the water is the pad and the drive. It takes a lot hp to move one of this boats only a little bit faster. Quote Link to post Share on other sites
cyclops2 Posted March 5, 2019 Share Posted March 5, 2019 Quicky about a pad boat. My 2002 186 is supposed to have a planning pad back there. I can believe it with a 5.0L V8 @ 220 hp. I could just reach 50 @ 4800 rev limiter. BUT And it is a huge but. Everything was maxed out. 2 quick blip of the drive up or down was a rapid loss of speed. The danger was at 50 gps. I had NO NO steering or stability left . At 50 the boat felt VERY LIGHT . like it was balanced on a bowling ball. It would do 2 second rolls / dips to F R L R and do that endlessly. I was afraid to try any turns. Switched props to a grippy prop. I do 45 with weeds on the bottom. I can cut it as fast as I want to. Know the danger signals of a over powered boat. Then prop down in a good way to protect any other driver of your boat. Quote Link to post Share on other sites
BajaDriver Posted March 5, 2019 Share Posted March 5, 2019 4 hours ago, Dturn said: Where did you get your prop/props labbed? And you probabaly want to figure out a baseline rpm before you spend deer on a prop. Correct? BBlades and they have my 25P mirage plus now. Yes get your baselines. and accurate speeds gps vs rpm. Quote Link to post Share on other sites
BajaDriver Posted March 5, 2019 Share Posted March 5, 2019 BTW what boat do you have? Quote Link to post Share on other sites
Dturn Posted March 6, 2019 Author Share Posted March 6, 2019 Looking at locking down a 2010 chap 275 ssi with 496 Ho Quote Link to post Share on other sites
Toddler Posted March 6, 2019 Share Posted March 6, 2019 An old friend put a wipple on a 8.2, he ended up sending the ECM to wipple to have it reprogramed. . Quote Link to post Share on other sites
BajaDriver Posted March 6, 2019 Share Posted March 6, 2019 14 hours ago, Dturn said: Looking at locking down a 2010 chap 275 ssi with 496 Ho it will need that motor for sure. 275 is heavy. I have seen several with the 5.7gxi and they struggle fully loaded. The Chap hull is good for 60-65mph from what I have seen. It takes a bunch of power and right conditions to get a 275 to see those numbers. remember this if you have a Chap 275 that can see 50mph you are doing very well. Anything above 50 is gravy. Most boats i see struggle to get to 50 and have to get there with a lot of effort. Our 06 252 sees 50-53 mph with ease and it uses the F5 props, I find this to be a great pitch. It also flies to the rev limiter. I can prop up for a few mph more but we load out boat down with peeps and equipment. With the F5 props I can also manipulate our wake at just about any speed for towing skiers or tubers. Quote Link to post Share on other sites
soldier4402 Posted March 6, 2019 Share Posted March 6, 2019 2 hours ago, BajaDriver said: it will need that motor for sure. 275 is heavy. I have seen several with the 5.7gxi and they struggle fully loaded. The Chap hull is good for 60-65mph from what I have seen. It takes a bunch of power and right conditions to get a 275 to see those numbers. remember this if you have a Chap 275 that can see 50mph you are doing very well. Anything above 50 is gravy. Most boats i see struggle to get to 50 and have to get there with a lot of effort. Our 06 252 sees 50-53 mph with ease and it uses the F5 props, I find this to be a great pitch. It also flies to the rev limiter. I can prop up for a few mph more but we load out boat down with peeps and equipment. With the F5 props I can also manipulate our wake at just about any speed for towing skiers or tubers. Ive had fountains and chaps, and I get the allure of the sporty family boat, but if you want performance you need to get a performance boat or go to something smaller. A 25-27ft boat that weighs 5-7k with a deep V just simply isn't going to be performance. Quote Link to post Share on other sites
Mi3sons Posted March 6, 2019 Share Posted March 6, 2019 I would research the xr props more before you buy a set. Merc racing told me they are for bigger cruisers, not to go fast. Quote Link to post Share on other sites
Dturn Posted March 7, 2019 Author Share Posted March 7, 2019 Thanks guys! I understand she isn't going to be a speed demon. Just hoping to gain 2-3mph and be more efficient across the rpm range doing it. Derek Quote Link to post Share on other sites
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