Inaccurate

I am looking for a dyno chart from Comptech that advertizes the claimed gains of their supercharger for the TL. I didn't see one at www.ct-engineering.com.

Can someone post (or give a link) to the dyno chart from Comptech showing the advertized gains ?

Some people say that "the Comptech supercharger on the 3rd gen TL made 65-85whp depending on the model."

And, there is this counter claim:

"For 5AT the supercharger WITH the cat-back exhaust makes only 60 HP more @ 6700 RPM which is I believe the redline! At 6300 RPM it ONLY makes ~36 more HP and that is also with the cat-back exhaust. The gains in the most usable power range are mediocre 20-30 hp at the most! ... BTW I got the numbers straight from the Comptech's website." (Source of quote - see post #18) (click here)


Can someone post (or give a link) to this dyno chart from Comptech showing the advertized gains ?

I would like to see the chart myself to see the average HP gain thru the usable RPM range (4500 - 6500), not just the peak gain at redline.

Snookynibbles

I offloaded all of the COMPTECH dynos for their website during front-end of the organization's ownership transition.

I do remember that their dyno for the Gen3 TL with an auto trans & with their 'full build' (i.e., supercharger, icebox cai, catback) was 288 whp. COMPTECH's advertisement also claimed an additional 5 whp for the MT version, though no separate dyno was ever provided.

I'm not on this site enough to familiarize myself with uploading of PDFs & JPEGs. Also, I currently am not registered on any FTP site to facilitate posting graphics. However, I have no problem providing you the dyno PDF files via my private e-mail.

SRT-11

so on an 04 AT, would it be unreasonable to think I could be over 300fwhp and in the mid 13's quarter mile if I have:

CAI, TB Spacer, IM/TB gaskets, UR pulley, No Cats, ATLP J pipe, Custom Borla exhaust?

SRT-11

(assuming I get the comptech SC)?

stillhere153

iTrader: (1)

Yes you'd be right over 300hp with those mods, but you'd have to completely unrestrict that exhaust with a 3" tubing :nunja:

Assuming the you decide to s/c

WRXtranceformed

Save them as a jpeg and host them for free at www.photobucket.com

I'm sure a lot of people would be interested in seeing those.

ussi

iTrader: (1)

here is my dyno - purple (before reflash). As you can tell there is the biggest increase in HP after 6100rpms

Hi speed

iTrader: (3)

There are a few people running in the 320's hp wise which is 100 hp gain from a stock 6 speed. So you figure thats 360-370 at the crank. With the stuff you mentioned you should be in the same range.

bankrup3000gt

I put down 284whp in my 05 accord 6spd, with just the comptech supercharger kit installed. everything else on my car was stock and I was on a dynojet dyno.

Snookynibbles

The Comptech SC kit includes their own CAI (aka 'Icebox')...the kit is actually a two-fold modification.

Inaccurate

I see many PEAK power level increases being offered. But, that is not the goal of this thread. The goal is to qualify the gains based on the usable RPM range without “twisting” the tach beyond 6500. What is the percentage increase at 4500 RPM, at 5500 RPM and 6500 RPM. Then, let’s average those three values to get an AVERAGE HP GAIN between 4500-6500 RPM. That is my goal with this thread.

stillhere153

iTrader: (1)

I've seen crazy jumps of 50+ at the 4k rpm range on some of these guys dyno charts...

see if 04 accord coupe can provide you with a quick sheet, he is always at the dyno lol

I hate cars

This is the odd thing about this setup. A positive displacement supercharger usually produces full boost at any rpm. That's the big advantge to these types of blowers, they really help fatten the entire powerband but don't have the best peak gains.

For whatever reason, I've heard reports that full boost doesn't come in until near redline which is very odd. It may have been done that way to deal with detonation problems since they will usually show up at lower rpms and full boost and the kit comes with a very primitive so called engine management.

The bypass valve may be set up to control when boost comes in. If so, you could probably alter the powerband but it might require more octane to be safe.

Personally, I think a centrifugal supercharger would have been a better route if peak hp was all they were going after.

Anyone with a blown TL, I would like to hear comments as to when boost starts coming in and where you get full boost.

CasperTL04

considering I drive mostly 1500 - 3500 rpm I would like to know the power increase there, as well.

madtraction39

I've always thought "roots-style" blowers were designed for low end power and torque. This means your s/c'd TL should be hitting full boost at a low rpm. Personally, if comptech doesn't come out with a blower for the 3g type-s I'm going to look into a custom turbo. I'm just concerned about the high compresion of the 3.5L motor.

Inaccurate

Snookynibbles came thru !!!! T H A N K S Snookynibbles

Below is one of the graphs that Snookynibbles sent -




Now we can answer the question "What is the HP gain in the usable RPM range without twisting the tach beyond 6500 ?

I averaged the HP figures in the range of 4300 to 6500 RPM. These figures were choosen because the auto trans shifts at 6500 RPM and the rpm drops to 4300 with each shift.



The S/C makes 14% more HP than CatBack.
The TL Diet makes 22% more HP than the CatBack.
The TL Diet makes 7% more HP than the S/C.
The S/C makes an average of 29 HP more than CatBack.
The TL Diet makes an average of 45 HP more than CatBack.

I wish to thanks Snookynibbles for supplying the graphs.

csmeance

I wonder how much power a dieted TL with supercharger and other mods will get... maybe in the 350WHP range...

Inaccurate

Well that is an easy one to answer.

Take the Comptech published HP of 280 HP (at 6500 RPM), and then multiple by 1.225. The answer is 343 HP.

That is what I like about the TL Diet. There is no iffy tuning required. Just a guaranteed 22.5% increase with no if-and-or-but.

CasperTL04

good info. Wow, I thought the SC would have been more powerful.

SporkLover

Superchargers are not miracle power adders.... remember you are adding a supercharger to an engine not designed for one..... so the power gains are going to be somewhat limited compared to an engine that may be designed for one.

FiveLiterCheater

Supercharger is kind of useless without the Hondata tuning, which doesn't seem to be coming out any time soon.

Kennedy

iTrader: (2)

That has nothing to do with anything. The Comptech SC could easily be tuned to push 8-10 lbs of boost and add more fule via higher flow fuel injectors... It has to do with reliability. The bottom end of the engine is weak... adding 150 HP via that much boost will certainly blow it up. It was "decided" to make the SC low output to keep the car driveable/reliable.


I wouldn't say it's useless by any means... and the Hondata tuning, again, is clearly overhyped. The promise of 50+ additional HP and removal of a very nominal surge complaint (that I have yet to really notice), is what's promised, yet of all the testers out there, I've never seen anything to support those claims, other than a few that said the surge is gone and the power delivery more smooth...

As "primitive" as the ACM is, it's not bad. certainly not as bad as all the folks here talk about... especially those that have never expereinced it... yet talk about how bad it is.

Granted, it makes most of it's power over the higher rpm band... that's an issue of engine dynamics... The TL NA makes most it's power in the higher RPM's too. You want crazy torque, low end power?... Go buy a V8 or diesel... or take the TL on a diet.

JJ, you should come down for a test ride before calling the SuperCharger "basically useless"

SporkLover

Ok... you say reliability.... I say the engine is not designed for it. It's not designed to be boosted, it's not designed to handle the extra load.... whatever. its all the same.

My only point was you can only throw soooo much boost at a stock engine before you start running into issues.... hence it not being a miracle power adder.

ssmtl2nv

iTrader: (2)

whoever told you guys the tl wasnt designed for boost, lied. First of all it is low compression and kicks ass at throttle. So instead of assuming, ask.

bent09

iTrader: (1)

Just curious, how much your diet cost?

Also would the above consider the added weight from the sc?

I hate cars

?????????? Is this a joke?

JCL622

11:1 compression?

FiveLiterCheater

I was gonna say...

FiveLiterCheater

I might have to, I really want to see/feel how a done-up TL feels on the highway...

Kennedy

iTrader: (2)

Consider the invite extended... Which should quell any further doubts

Inaccurate

Cost versus price ? Deep subject. Price wise, I suppose roughly $3800 for items purchased. On the other hand, the cost (lowered perceived market value) is difficult to ascertain. By the way, this "cost" topic was discussed in the opening post of the TL Diet thread.


Good catch regarding the weight of the blower. No. I didn't include the weight of the blower.

ussi

iTrader: (1)

+1

Knertified

I'm considering looking into the S/C kit because I'm bored but now that the 3.7L TL AWD is coming out, that seems like a much better base to start with.

I hate cars

The reason for such low boost is octane. I'm sure the stock internals could handle more than 4psi but this 11.0:1 motor is octane limited.

I'm not saying it's designed for boost, just saying it's an octane issue, not strength issue.

With the roots style blower, no matter what the NA powerband is like, there should be a huge jump in low end torque and a smaller gain in top end. A supercharged/turbocharged engine will usually make it's peak torque at whatever rpm it hits full boost.

This setup is really inefficient. It hits full boost at a high rpm which is where the roots is least efficient and it doesn't take advantage of the huge low end boost it should provide. You would be better off getting a centrifugal blower so at least the top end charge would be better. I know the blower works but there is so much more left in this setup with proper tuning, especially in the low/mid rpms. An extra 50+hp in the middle should easily be attainable.

ssmtl2nv

iTrader: (2)

compared to the s type.....

jdmspec333

s type? we're comparing it to a jaguar?

Inaccurate

Regarding the strength of the J32 to take boost…

I have dabbled with the thought of the blower or Nox for my TL. After reading several cases of TL guys blowing the J32’s head gasket when pushed hard with either the blower or Nox, I am damn sure that I am not doing either to my car.

FiveLiterCheater

There are people that have hydrolocked with a CAI....doesn't mean its going to happen to everyone. Every performance mod done to an engine is putting it at risk....jus the name of the game You are always going to hear horror stories, but there will always be way more success stories to warrant the risk

A supercharger pushing 4PSI really can't do that much damage unless you're constantly bouncing off the rev limiter.

Inaccurate

Agreed. That is why I used bold text for "when pushed hard". In all cases that I saw, the owner was pushing beyond the advised limits. But, these cases do give us a feel for what the "weak link" is and when this weak link can be provoked to fail. For me, I want a big margin between me and this “weak link”.

I hate cars

Usually the weak link is the tuning. You can push stock parts pretty far in most cars as long as you stay away from detonation. I have a collection of blown headgaskets and a broken forged piston from my 12 and 13 second days yet I have never broken an engine part using the same parts in the 10s and knowing how to tune.