Help me diagnose my low dyno numbers
#1
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1993 1.6L running MS2PNP, gt2560 @16psi, 420cc injectors. BEGI manifold, FM downpipe and 2.5" straight pipe exhaust
Made 180whp/wtq on a Dynapack
As far as I can tell, the engine is happy. Doesn't cough oil and runs smooth (although I haven't gotten around to doing a compression test). AFRs are on point. Why are my numbers so low, when similar setups have been pushing 225+ with less boost?
I've attached my tune as well as a picture of my timing table.
Made 180whp/wtq on a Dynapack
As far as I can tell, the engine is happy. Doesn't cough oil and runs smooth (although I haven't gotten around to doing a compression test). AFRs are on point. Why are my numbers so low, when similar setups have been pushing 225+ with less boost?
I've attached my tune as well as a picture of my timing table.
#10
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- Is your clutch slipping?
- What is your exhaust diameter at its narrowest section?
- Do you have a catalytic converter?
- What gear was the car in on the dyno, and what gear did the operator enter in the computer?
- Is your timing belt installed correctly, with no teeth skipped?
- Do you have stock diff ratio, and was it entered correctly?
- Do you have odd sized tires/rims?
- Have you checked your intake tract (including TB) for obstructions?
- Have you absolutely made sure you have calibrated your timing using a timing gun?
#12
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- Is your clutch slipping? No.
- What is your exhaust diameter at its narrowest section? At least 2"
- Do you have a catalytic converter? No.
- What gear was the car in on the dyno, and what gear did the operator enter in the computer? 4th.
- Is your timing belt installed correctly, with no teeth skipped? Bought the car with the timing belt redone ~20k miles ago
- Do you have stock diff ratio, and was it entered correctly? Not sure what he entered, but stock open diff.
- Do you have odd sized tires/rims? Dynapack's bolt directly to the hubs.
- Have you checked your intake tract (including TB) for obstructions? Cleaned the throttle body butterfly when installing my VTPS.
- Have you absolutely made sure you have calibrated your timing using a timing gun? Yes.
#14
Elite Member
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iTrader: (2)
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 3,222
Total Cats: 1,701
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
- Is your clutch slipping? No.
- What is your exhaust diameter at its narrowest section? At least 2"
- Do you have a catalytic converter? No.
- What gear was the car in on the dyno, and what gear did the operator enter in the computer? 4th.
- Is your timing belt installed correctly, with no teeth skipped? Bought the car with the timing belt redone ~20k miles ago
- Do you have stock diff ratio, and was it entered correctly? Not sure what he entered, but stock open diff.
- Do you have odd sized tires/rims? Dynapack's bolt directly to the hubs.
- Have you checked your intake tract (including TB) for obstructions? Cleaned the throttle body butterfly when installing my VTPS.
- Have you absolutely made sure you have calibrated your timing using a timing gun? Yes.