Comptech Dyno's Finally Up!!!
11-12-2003, 01:18 PM
#1
Three Wheelin'
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Comptech Dyno's Finally Up!!!
http://solar.innercite.com/comptech/tsxdyno.html
there is a dyno for headers, icebox, and catback and also alltogether
gains arent as good as i expected them to be
there is a dyno for headers, icebox, and catback and also alltogether
gains arent as good as i expected them to be
11-12-2003, 01:46 PM
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So......who was the guy who said there was such a huge difference with the Comptech catback? Not more than a 3.5 WHP gain ANWHERE in the rev range? .....for NINE HUNDRED BUCKS? If I was Comptech, I wouldn't have posted these dyno charts. This is pitiful for how much this stuff costs. :P
11-12-2003, 01:59 PM
#7
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Originally posted by ClutchPerformer
Even post vtec, you only get 13 HP! (for $1470 + whatever the intake costs)!
Even post vtec, you only get 13 HP! (for $1470 + whatever the intake costs)!
See, we already have 10 more hp than the euro version which I believe was through exhaust tuning. Plus our engine is already a tuned version of the accord. So perhaps gains through bolt ons wont be so easy with the TSX.
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11-12-2003, 02:09 PM
#11
wow! so much $$$$, so little bang.... 
so who voted nay in that "sacrificing handling for more power" thread"? i rather have more stock power then get improved handling thru aftermarket upgrades...at least i know i will get my money's worth
so who voted nay in that "sacrificing handling for more power" thread"? i rather have more stock power then get improved handling thru aftermarket upgrades...at least i know i will get my money's worth
11-12-2003, 02:17 PM
#12
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Originally posted by dabuda2004
wow! so much $$$$, so little bang....
so who voted nay in that "sacrificing handling for more power" thread"? i rather have more stock power then get improved handling thru aftermarket upgrades...at least i know i will get my money's worth
wow! so much $$$$, so little bang....
so who voted nay in that "sacrificing handling for more power" thread"? i rather have more stock power then get improved handling thru aftermarket upgrades...at least i know i will get my money's worth
As for the injen intake. Was that dynoed at something like 11 whp ? Thats got to be BS ... or its a really good intake.
11-12-2003, 02:22 PM
#14
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Originally posted by ClutchPerformer
That's what I'm thinking....now what do I do?
That's what I'm thinking....now what do I do?
Let me check my crystal ball.....
... i hear the sound of a blow-off valve in your future.
11-12-2003, 02:25 PM
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Key difference between injen and comtpech is that the injen dyno goes up to 7400rpm comptech 7000. If the comptech tune stays at 143lb ft all the way to 7400rpm that's 201+ whp. The injen intake dyno doesn't hit it's peak hp number until 7300 rpm or so which i bet is the source of alot of the discrepancy.
i'm interesting to see some user dynos..especially of the injen
I was originally thinking hard about getting an intake but I think now i'll just get a k&n and if I get anything it will be the comptech header. Seems to actually give some low end gains which stands to reason since it's a 4-2-1 and factory is 4-1 setup.
i'm interesting to see some user dynos..especially of the injen
I was originally thinking hard about getting an intake but I think now i'll just get a k&n and if I get anything it will be the comptech header. Seems to actually give some low end gains which stands to reason since it's a 4-2-1 and factory is 4-1 setup.
11-12-2003, 02:30 PM
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if you look closely at the auto injen dyno you see that at 7000 rpm there is about a 8 hp gain already(from about 155 to say 163 or so). how does comptech squeeze 178 out of the stock tsx at 7000? im sure comptech tested a 6mt but the stock 6mt dyno posted on here was about 170 at 7000. another 6mt dyno hit 169s. there seems to be a lot of discrepency b/w these dynos
11-12-2003, 02:32 PM
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dynos can be different and cars can be different. Sport compact car tested one and got 178hp out of it stock..i'd guess the difference is due to teh dyno and conditions and amount of breakin.
11-12-2003, 02:38 PM
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that is true. does anyone have a dyno that they have done with their injen? AEM dynoed their sri with a peak of 178 hp @ 7000 rpm. AEM and injen are getting 8-10 hp from just a intake over stock. It would be interesting to see PROJECTSX get a dyno with his injen AND his fujitsubo exhaust.
11-12-2003, 03:37 PM
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personally I applaud comptech for putting up dynos that aren't stupendous. They have a history of not doing that. Plus they put up sepearate dynos vs. baseline for each mod. I also think they probably picked a very strong baseline. It's obvious injen went and pickekd a very weak baseline for their dynos to inflate the gains for their product.
+1
11-12-2003, 03:39 PM
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The baseline shouldn't matter, though. Only the difference between the two curves (on the same dyno), right?
Edit: on a different note....how can you turbo/supercharge a car that already has a 10.5:1 compression ratio?
Edit: on a different note....how can you turbo/supercharge a car that already has a 10.5:1 compression ratio?
11-12-2003, 03:47 PM
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low boost. Most boost kits actaully come with different pistons to drop compression. RSXs kits go for around 3 grand that include everything you need.
The difference between the two curves is what matters yes. Which is why runs with mods but no baseline is of limited use. However you can inflate the gains shown by your mods by picking a very weak baseline. Usually multiple runs are done and they choose the ones they want to show.
The difference between the two curves is what matters yes. Which is why runs with mods but no baseline is of limited use. However you can inflate the gains shown by your mods by picking a very weak baseline. Usually multiple runs are done and they choose the ones they want to show.
11-12-2003, 03:53 PM
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Originally posted by TinkySD
...Most boost kits actaully come with different pistons....
...Most boost kits actaully come with different pistons....
Well, at least we know Comptech's not lying to us. We need a "PW" smiley...
11-12-2003, 05:04 PM
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all this talk about the comptech products does anyone know what the fujitsubo exhaust is? And to me its seems the tourque gains are halfway decent, the header has a 5 lb/ft gain more or less up to 3000 rpm, that seems good considering the car needs more uph at low revs. Althought im not a engine person so im just going with logic theres no experience to back that up. haha
11-12-2003, 05:06 PM
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Haven't seen any dynos for any other companies. Hopefully we will before too long. I have a feeling though there isn't much to be gained. I mean a 4 banger with dual exhaust doesn't leave a hell of a lot for improvement. I am pretty impressed with the low end gains from the headers(4-2-1) as compared to stock 4-1 design...so much so that if I get any performance mods it will probably be the headers. It also gives you a noticeable kick in vtec range which you'll definitely be able to feel.
11-12-2003, 05:24 PM
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projectsx is going to run his car on a dyno sometime this month when he gets the chance
his mods (that affect engine performance) are injen cai and fujitsubo exhaust
his mods (that affect engine performance) are injen cai and fujitsubo exhaust
me sad now.
11-12-2003, 07:20 PM
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I knew there wasn't much to be gained for these items given the dollar amount. I will stick with someones intake and few suspension mods and run it! Save your money fellas.
11-13-2003, 07:34 AM
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I have to at least chime in here. I'm not surprised by the results. Actually, It is what I was expecting to see. Tinky said two things: The Comptech Dyno seem credible, and the Injen Dyno seems BS. And I agree with both statements. On two other exhaust threads, I had warned you people of 2 things:
1. No Intake dyno will honestly yield big Hp. Companies who show dynos with big gains for any single part are throwing BS. This means they are hiding something, probably that they are not up to competition.
2. You can't expect to get big gains from just I/H/E from the TSX, since, compared to the Accord K24, the TSX's K24A2 is already a well tuned engine from which aftermarket basic mods will yield only minimal gains.
I commend Comptech for the honest dynos, and on this I state that my first engine mod will be the lightweight flywheel. Torque, here I come, baby!
1. No Intake dyno will honestly yield big Hp. Companies who show dynos with big gains for any single part are throwing BS. This means they are hiding something, probably that they are not up to competition.
2. You can't expect to get big gains from just I/H/E from the TSX, since, compared to the Accord K24, the TSX's K24A2 is already a well tuned engine from which aftermarket basic mods will yield only minimal gains.
I commend Comptech for the honest dynos, and on this I state that my first engine mod will be the lightweight flywheel. Torque, here I come, baby!
11-13-2003, 08:10 AM
#38
not an expert, 
can you explain why light wheight flywheel improve torque? after seeing competch result, i am looking for other alternative route, and Injen look too good to be true...
thanks..
can you explain why light wheight flywheel improve torque? after seeing competch result, i am looking for other alternative route, and Injen look too good to be true... thanks..
11-13-2003, 08:26 AM
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I don't have any dyno to show you. But from my experience on my long-geared 95 Accord, the engine is a lot more rev-happy. This should in theory be a little more pronounced on the TSX due to the short gearing.
What happens, is the flywheel acts as a dampener to smooth out the engine's cycles. Car manufacturers use very heavy flywheels to really counter vibrations that could be transmitted to the cabin. It also helps in that on long smooth shifts, the heavy flywheel will keep engine rpms high long enough that once dropping back the clutch, the engine won't have to compress to get back up to the right rpms.
The lightweight flywheel will diminish those attributes, which I don't think really matter anyway, because if you are into modding your car, you probably aren't doing long shifts anyway, especially not with the TSX.
The LFW will also allow for better engine acceleration which will translate into a feeling of improved torque in the first 3-4 gears.
Now don't get me wrong: The flywheel does not increase hp All it does is help the engine climb revs faster due to the reduced inertia, but once it's up there, the LFW doesn't change anything. But you will feel a good difference below 5500 rpms, which to me is where it pays for day to day driving.
I had also mentionned in my Fuel Economy thread that the LFW may help with fuel economy, and it does, though not largely.
One last thing I noticed about the LFW is that the engine was much harder to stall, and that too I miss, because the TSX is a hesitater if you don't give it plenty of gas while launching. The LFW improves that pretty well also.
I think it's the all around best modification you can do for your car with good improvements, and very little sacrifices. Go on Honda-Tech, ask anyone who has put in an LFW (not lightened their stock FW), and they'll all say they were very happy with it.
What happens, is the flywheel acts as a dampener to smooth out the engine's cycles. Car manufacturers use very heavy flywheels to really counter vibrations that could be transmitted to the cabin. It also helps in that on long smooth shifts, the heavy flywheel will keep engine rpms high long enough that once dropping back the clutch, the engine won't have to compress to get back up to the right rpms.
The lightweight flywheel will diminish those attributes, which I don't think really matter anyway, because if you are into modding your car, you probably aren't doing long shifts anyway, especially not with the TSX.
The LFW will also allow for better engine acceleration which will translate into a feeling of improved torque in the first 3-4 gears.
Now don't get me wrong: The flywheel does not increase hp All it does is help the engine climb revs faster due to the reduced inertia, but once it's up there, the LFW doesn't change anything. But you will feel a good difference below 5500 rpms, which to me is where it pays for day to day driving.
I had also mentionned in my Fuel Economy thread that the LFW may help with fuel economy, and it does, though not largely.
One last thing I noticed about the LFW is that the engine was much harder to stall, and that too I miss, because the TSX is a hesitater if you don't give it plenty of gas while launching. The LFW improves that pretty well also.
I think it's the all around best modification you can do for your car with good improvements, and very little sacrifices. Go on Honda-Tech, ask anyone who has put in an LFW (not lightened their stock FW), and they'll all say they were very happy with it.