Just got the Sept issue of Turbo magazine, and it has a quick breakdown of 9 exhaust systems on the market for the Celica. I was surprised that they had the Veilside exhaust, since I seem to recall that it came out only a couple of months ago. Anyways, for those w/o a subscription, money, or the patience to go read a copy, here's the info:
1. Factory MSRP: $219.60 27.5 pounds 90 mm tip 75 db at idle 76 db at 3000 rpm 161.0 hp peak 119.6 lb-ft peak
2. 5Zigen Fireball MSRP: $N/A 26.5 pounds 85 mm tip 79 db at idle 85 db at 3000 rpm 163.0 hp peak 120.4 lb-ft peak
3. A'PEXI N1 MSRP: $560 23.5 pounds 90 mm tip 77 db at idle 88 db at 3000 rpm 164.0 hp peak 120.8 lb-ft peak
4. Blitz Nur Spec MSRP: $530 21 pounds 95 mm tip 82 db at idle 98 db at 3000 rpm 162.4 hp peak 119.9 lb-ft peak
5. GReddy Evolution MSRP: $599 35.5 pounds 115 mm tip 82 db at idle 83 db at 3000 rpm 166.3 hp peak 122.0 lb-ft peak
6. Tanabe Racing Medallion MSRP: $660 29 pounds 100 mm tip 83 db at idle 93 db at 3000 rpm 166.5 hp peak 122.6 lb-ft peak
7. Rod Millen MSRP: $550 28 pounds 95 mm tip 75 db at idle 88 db at 3000 rpm 166.4 hp peak 122.5 lb-ft peak
8. TRD MSRP: $648 25 pounds 100 mm tip 75 db at idle 88 db at 3000 rpm 166.7 hp peak 123.5 lb-ft peak
9. Veilside Teardrop Titanium MSRP: $690 8 pounds 115 mm tip 82 db at idle 90 db at 3000 rpm 165.3 hp peak 122.6 lb-ft peak
10. HKS Hi-Power MSRP: $710 28 pounds 95 mm tip 79 db at idle 90 db at 3000 rpm 165.7 hp peak 121.7 lb-ft peak
Summary:
Peak Power (highest to lowest in hp): 166.7 - TRD 166.5 - Tanabe 166.4 - Rod Millen 166.3 - GReddy 165.7 - HKS 165.3 - Veilside 164.0 - A'Pexi 163.0 - 5Zigen 162.4 - Blitz 161.0 - Factory
Noise (Most quiet to Loudest in dB at idle): 75 - Factory/ TRD/ Rod Millen 77 - A'Pexi 79 - 5Zigen/ HKS 82 - Veilside/ GReddy/ Blitz 83 - Tanabe
Noise (Most quiet to Loudest in dB at 3000 RPM): 76 - Factory 79 - 5Zigen 83 - GReddy 88 - A'Pexi/ Rod Millen/ TRD 90 - Veilside/ HKS 93 - Tanabe 98 - Blitz
Keep in mind that although the numbers may differ from individual to individual, the test were done together by Turbo, so the ranking should not be that different (except price). As you can see from the little tables, TRD is probably still the best overall performer. Veilside is pretty good, except that it fall short a bit on the peak horsepower (again, can't just look at peak power, and I didn't compare the entire dyno graphs) and it's physically daunting. GReddy has previously posted on nc.org about it having a high quality exhaust and from the data gathered, it's not quite true. Even tho it's pretty darn close to the highest peak powers and peak torques, the Evolution is by far the heaviest, which more than likely offsets whatever power advantage it may have. Blitz makes very little power above factory, probably even negligible; its saving grace are sound (from what ppl have said), price (lowest next to factory), and weight (second lightest). Tanabe consistently ranks well as does Rod Millen (probably b/c of its close ties to TRD). TRD and Rod Millen also makes the biggest jump in noise at 13 dB between idle and 3000 rpm; 5Zigen doesn't change in that range.
Anyways, this may all be old news to most of you, but it was cool seeing Turbo still keeping up with its project Celica. In fact, there is a little 3 page article updating ppl on the project as well as a few scattered articles mentioning the 7 sec Celica from turbonetics. Well, enjoy!
EDIT: Oops, sorry I forgot to mention that www.turbomagazine.com [turbomagazine.com] will have sound clips of all exhausts, at least according to the magazine. The sound clips are not yet there as of July 4th.
It's not just your imagination... Your day really does go by twice as fast while on EverythingCelica.com
Personally I'm glad to see that TRD is on top of its h!t. My friend has a GTS and he put the Tanabe exhaust system on his car. I must say it sounds pretty nice, looks clean.
i was going to go for the trd as well, but opted for the hks. hks has proven to do very well in performance parts. i know that trd is based on toyota studies and all, but i wonder if it will work well with turbo.
So I'm sitting here what all these numbers mean. I know how much power each exhaust puts out and I know how much each one costs. I know which one costs the most, and now I know thich one is the loudest. I think that the ranking system listed above is a fallacy though. TRD had the highest HP. Isn't HP and Torque related by some equation? Surprisingly the HP ranking list looks strangely similar to the Torque ranking list. So here's the deal. Why not re-analyze these numbers.
How about we figure out which exhaust performs the best using power-to-weight ratio (HP/lb) as a measure? Just because an exhaust puts out more horsepower doesn't mean its better if it is a heavy mother*****. Right? Then, what about value? Fine, we know HKS costs an arm an a leg and Devine Brown is a cheap choice for Hugh Grant. But how do you determine value? Well, to me, I think dollars per horsepower is a good measure. So here I go. I'm no statistician, but my numbers seem to make sense to me, and it kind of reorganizes your rankings...
DOLLAR/HORSEPOWER how much does 1 HP cost u? (least expensive to most expensive) 1)-STOCK- $1.36/HP <-- economies of scale 2)Blitz $3.26/HP 3)Rod Millen $3.31/HP 4)Apexi $3.41/HP 5)GReddy $3.60/HP 6)TRD $3.89/HP 7)Tanabe $3.96/HP 8)Veilside $4.17/HP 9)HKS $4.28/HP
So, there's the breakdown. Of course you wonder. Who in the world is going to pay to buy an HKS exhaust that gives you only mediocre bang for your buck? Well, I think there is an untangible price on the "look" of the exhaust that affects our willing to pay.
Interesting perspective, but there are a few problems with it. First of all, the prices listed are not realistic. I know I bought my TRD exhaust brand new shipped from e-toyotas.com for $488, not $650, and I image the other exhausts sell at different prices as well. Also, the weight comparison only really makes sense if you take into account the relative weight compared to the rest of the car.
If one VVT-I sticker weighs twice as much as another VVT-I sticker one can't say that it is twice as good (cuz we all know they give about 20hp). If you redo the calculation taking into acount the relative change in the cars curb weight and the relative change in the cars overall power, then it might be a little more fair.
In the end, however, these guys don't add a heck of a lot of power and its more about the sound and look than anything else.
just a thought.
(PS- I love my TRD)
Quote
Originally posted by RACarboy: NUMBERS NUMBERS NUMBERS.
So I'm sitting here what all these numbers mean. I know how much power each exhaust puts out and I know how much each one costs. I know which one costs the most, and now I know thich one is the loudest. I think that the ranking system listed above is a fallacy though. TRD had the highest HP. Isn't HP and Torque related by some equation? Surprisingly the HP ranking list looks strangely similar to the Torque ranking list. So here's the deal. Why not re-analyze these numbers.
How about we figure out which exhaust performs the best using power-to-weight ratio (HP/lb) as a measure? Just because an exhaust puts out more horsepower doesn't mean its better if it is a heavy mother*****. Right? Then, what about value? Fine, we know HKS costs an arm an a leg and Devine Brown is a cheap choice for Hugh Grant. But how do you determine value? Well, to me, I think dollars per horsepower is a good measure. So here I go. I'm no statistician, but my numbers seem to make sense to me, and it kind of reorganizes your rankings...
DOLLAR/HORSEPOWER how much does 1 HP cost u? (least expensive to most expensive) 1)-STOCK- $1.36/HP <-- economies of scale 2)Blitz $3.26/HP 3)Rod Millen $3.31/HP 4)Apexi $3.41/HP 5)GReddy $3.60/HP 6)TRD $3.89/HP 7)Tanabe $3.96/HP 8)Veilside $4.17/HP 9)HKS $4.28/HP
So, there's the breakdown. Of course you wonder. Who in the world is going to pay to buy an HKS exhaust that gives you only mediocre bang for your buck? Well, I think there is an untangible price on the "look" of the exhaust that affects our willing to pay.
wut do you guys think is the best sounding exhaust? Since exhaust isn't THAT much of a power gain, do you think it would be better to go with sound rather than performance? i've heard the exhausts and in my opinion the apexi is best. wut do you think?
04 Toyota Spyder - TRD Sportivo, B&M SS, TRD Front and Rear Strut Braces, Volk TE37's, Garrett GT28RS Turbo 10psi, TiAl wastegate, HKS SS BOV, Air/Water IC
I hear the Apexi gen 2 can match TRD in terms of torque and horsepower and beat them low to mid range. (can't find dynos though) So I'd go for that. Assuming of course you won't mind a relatively quiet exhaust.
CelicaHobby.com is an independent Toyota Celica enthusiast website. CelicaHobby.com is not sponsored by or affiliated with Toyota Motor Sales, USA, Inc. in any way. The Toyota and Celica names and logos are trademarks owned by Toyota Motor Sales, USA, Inc.
![[Linked Image]](https://celicahobby.com/sig/id242u.jpg)
![[Linked Image]](https://celicahobby.com/photos/download/94816-2/HeadlightTonysig.jpg)
