carb versus TBI dyno charts
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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357supermagnum
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- Joined: Sat Oct 24, 2009 6:47 pm
carb versus TBI dyno charts
Hello, does anyone have any charts on a 383-350 cid V8 engine (stock intake, exhaust system, stock valve heads),with a carb versus a TBI install ?
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Matt Cramer
- Super Squirter
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- Joined: Sat Jul 03, 2004 11:35 am
Re: carb versus TBI dyno charts
Yes, we've got a couple dyno charts from our Nova project.
1. Swap carb for TBI, distributor with performance recurve kit controlling ignition:
http://www.DIYAutoTune.com/tech_article ... 1-nova.htm
2. Have the ECU take control of the ignition:
http://www.DIYAutoTune.com/tech_article ... 2-nova.htm
1. Swap carb for TBI, distributor with performance recurve kit controlling ignition:
http://www.DIYAutoTune.com/tech_article ... 1-nova.htm
2. Have the ECU take control of the ignition:
http://www.DIYAutoTune.com/tech_article ... 2-nova.htm
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357supermagnum
- MegaSquirt Newbie
- Posts: 13
- Joined: Sat Oct 24, 2009 6:47 pm
Re: carb versus TBI dyno charts
Nice, you mentioned that the TBI unit had a little too low flow.Matt Cramer wrote:Yes, we've got a couple dyno charts from our Nova project.
1. Swap carb for TBI, distributor with performance recurve kit controlling ignition:
http://www.DIYAutoTune.com/tech_article ... 1-nova.htm
2. Have the ECU take control of the ignition:
http://www.DIYAutoTune.com/tech_article ... 2-nova.htm
What kind of improvements would a 1000CFM unit do ?
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: carb versus TBI dyno charts
We actually tried a 4 barrel Holley Pro-Jection throttle body later and were a bit surprised - it didn't make any improvement. We think it may have been a case of "right mod, wrong engine."