Hi,
I am new to this and have searched but have not found answers. I would like to add the reflash to a 2001 Civic Si. To do so I understand that I need at least an intake, header or a combination of both. I would like to just replace the intake, but was curious:
1) How much difference in torque and HP will there be between stock, reflash + CAI, and reflash + CAI + Header.
I am not so much looking at the numbers, but rather feel and performance but i assume the numbers will be the best way to tell.
2) I beleive I have read that a Cold air intake is much better to pair with the reflash than a short ram. Is that correct?
3) If 2) is true, is there a specific brand that you recommend? AEM or Injen seem to be the most popular based on my research?
Lastly, if adding a header makes a BIG difference in addition to the CAI and reflash, again what models are recommended? I would like to stay emmissionis legal if at all possible, so does that mean either the CT Engineering shorty or the Vibrant with a cat? If so, which one works best?
Lastly, I seem to be concluding that an exhaust is the least beneficial and will not make any material difference. Is that correct? If it was material and not just a few HP and ft pounds, then I would like it fairly quiet...and for that I think there is one Greddy SE or similar? But...is that any better than stock for performance?
Sorry for all the questions and I appreciate any and all advice.
Colebob
07 Civic Reflash and CAI
Thank you for the explanation. I am inexperienced at reading Dyno's, but in looking at the website and the dyno's, here is what I am concluding. Please tell me if I have gone wrong somewhere. :-)
If I have a CAI of any good brand, I will have at 6,000 RPM:
Torque 122
HP 142
If I add the reflash to my CAI, at 6,000 RPM I will have:
Torque 135
HP 156
If I have a CAI of any good brand and a good Header, I will have at 6,000 RPM:
Torque 130
HP 149
If I add the reflash to my CAI and Header, I will have at 6,000 rpm:
Torque 155
HP 178
At max rpm of 8400, with just a CAI I would have:
Torque 145
HP 200
At max rpm of 8400 with both a CAI and a Header, I would have:
Torque 160
HP 217
So...as I look at this, and assuming per the website this is all still with a stock exhaust (which I prefer unless that would add substantial HP and Torque), I am concluding:
A reflash is great...adds substantially to both scenarios.
BUT, ading a header to go along with a CAI increase torque by an additional 20 ft lbs and additional HP by 22.
If that is correct, having both a CAI and a Header seems to make a ton of sense (as much sense as getting the reflash).
Please if I am concluding incorrectly from what I am seeing on the website, please let me know (and please confirm if I am reading correctly).
Thanks,
Colebob
If I have a CAI of any good brand, I will have at 6,000 RPM:
Torque 122
HP 142
If I add the reflash to my CAI, at 6,000 RPM I will have:
Torque 135
HP 156
If I have a CAI of any good brand and a good Header, I will have at 6,000 RPM:
Torque 130
HP 149
If I add the reflash to my CAI and Header, I will have at 6,000 rpm:
Torque 155
HP 178
At max rpm of 8400, with just a CAI I would have:
Torque 145
HP 200
At max rpm of 8400 with both a CAI and a Header, I would have:
Torque 160
HP 217
So...as I look at this, and assuming per the website this is all still with a stock exhaust (which I prefer unless that would add substantial HP and Torque), I am concluding:
A reflash is great...adds substantially to both scenarios.
BUT, ading a header to go along with a CAI increase torque by an additional 20 ft lbs and additional HP by 22.
If that is correct, having both a CAI and a Header seems to make a ton of sense (as much sense as getting the reflash).
Please if I am concluding incorrectly from what I am seeing on the website, please let me know (and please confirm if I am reading correctly).
Thanks,
Colebob