Low speed torque and driveability ?
Stock 2bbl with headers vs 4bbl headers and xe262h
TORQUE SUPERFLOW 901 DYNO-TESTED AT WESTECH
RPM
BASE
MOD 1
MOD 2
2,000
292
2,500
287
3,000
287
338
336
3,500
272
335
340
4,000
248
326
330
4500
218
309
319
5,000
188
285
296
5,500
250
258
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