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Rosh/ whipple upgrade heat exchanger?
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<blockquote data-quote="kevinp" data-source="post: 12806374" data-attributes="member: 106826"><p>Depends where your sensor is and how its wired. If you use the Roush wiring into IAT2 and log IAT1 then you are seeing the temp from the sensor in the MAF. </p><p></p><p>As far as centris the IAT sensor is usually isolated in a tube and they tend to read near ambient when cruising around. Not going to happen with an IAT sensor mounted to an aluminum intake thats bolted to an 200 degree engine. If you watch the IATs will dip when nail a PD car, then start climbing after a few seconds - thats the test of the intercooler system's effectiveness.</p><p></p><p>Larger capacity heat echanger will most likely not lower the cruising around IATs if the sensor is in the same place, but will make that time between the IAT dipping and starting to rise longer.</p><p></p><p>IMO the Roush HE is adequate with the 90 and 82mm pulley for 1/4 mile blasts in good weather and general playing around, 50-130mph blasts (on a closed course naturally) etc. If I was running smaller pulleys, texas mile or road racing where I was using a lot of throttle I would want a larger exchanger. The fans would be nice for cooling between rounds and keeping heat in check during the burnout, staging etc at the dragstrip on warmer days as well. Should help with consistency if anything. Or if you sit in traffic on a 100 degree day the fans would be nice to be at the ready when things open up <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p><p></p><p>I've never seen any A-B logs doing nothing but swapping exchangers on similar days temp-wise, just 1/4 mile would be interesting to see. Like anything else bigger is usually better but if the pump and core in the intake manifold cant take advantage of the extra heat excahanger capacity there may be diminishing returns.</p><p></p><p>In other words, I've never tried it so I dont know <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="kevinp, post: 12806374, member: 106826"] Depends where your sensor is and how its wired. If you use the Roush wiring into IAT2 and log IAT1 then you are seeing the temp from the sensor in the MAF. As far as centris the IAT sensor is usually isolated in a tube and they tend to read near ambient when cruising around. Not going to happen with an IAT sensor mounted to an aluminum intake thats bolted to an 200 degree engine. If you watch the IATs will dip when nail a PD car, then start climbing after a few seconds - thats the test of the intercooler system's effectiveness. Larger capacity heat echanger will most likely not lower the cruising around IATs if the sensor is in the same place, but will make that time between the IAT dipping and starting to rise longer. IMO the Roush HE is adequate with the 90 and 82mm pulley for 1/4 mile blasts in good weather and general playing around, 50-130mph blasts (on a closed course naturally) etc. If I was running smaller pulleys, texas mile or road racing where I was using a lot of throttle I would want a larger exchanger. The fans would be nice for cooling between rounds and keeping heat in check during the burnout, staging etc at the dragstrip on warmer days as well. Should help with consistency if anything. Or if you sit in traffic on a 100 degree day the fans would be nice to be at the ready when things open up ;) I've never seen any A-B logs doing nothing but swapping exchangers on similar days temp-wise, just 1/4 mile would be interesting to see. Like anything else bigger is usually better but if the pump and core in the intake manifold cant take advantage of the extra heat excahanger capacity there may be diminishing returns. In other words, I've never tried it so I dont know :) [/QUOTE]
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Rosh/ whipple upgrade heat exchanger?
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