Good people, they are. TopSpeed does damn fine work.

 

Thats exactly what I am worried about! I drive highway lots too...and what you are describing...is right in the RPM range you generally cruize at? If that shaking/surging were occurring that would suck...and I hate to have to drive faster to get it to stop. What is the answer here as you perceive it since you have one in and have cruized HW in it. By the way...I have an automatic.

 

dan..., what was ur air/fuel numbers when u were on the dyno??? if you can please post the dyno sheet with ur air/fuel numbers from the low rpms to high.
When car stays in the closed loop longer you can see that the air/fuel numbers are all over the the place and that sometimes causes your car to pause, your rpms are going up, but it feels like the car is not going anywhere but then after like a second it get back on with no problems. So this only happens when you cruise right? but when you punch it its fine with no problems??? After i put a turbo kit on my 2005 sentra se-r i had the same thing happen to me, at cruising speed sometimes the car will jerk but when i punch it it would be fine with no problems, the cause of that was my primary O2 sensor was bad so after i got the bosch one it was fine, but like i said when that happened jerking, i had my wideband gauge so i could do see what was happing with the car and during that time my wideband was going very very lean thats what caused the jerking my car was not getting enough fuel in because my ecu wasn’t reading the O2 right. I wonder if after installing the s/c on tl that stock O2 sensor go bad and wont ready the mixture right.

 

I'll have to agree with this concern. If I'm crusing at about 3k-4k RPMs I don't want a surge or jerk or anything for that matter when simply applying partial throttle to go up a hill, or pass someone, or just increase speeds.

I am convinced from what I've read that the increase in performance is outstanding, which is awesome to hear. However no matter how minor the jerk/ surge is, it is now an issue that concerns me.

I would spend the money for this s/c in a heart beat if there were no issues!

I'll pay for half the cost to get the performance increase for everytime i mash the throttle, but for me to pay the other half I need the s/c to behave as if it wasn't there for the times when i don't mash the throttle, which is like what? 95+% of the TL's drive time!

In other words, it will take a bit more convincing or a fix to this problem for me to spend $4500+ for a surge/jerk/drivability issue that I'll have 95% of my drive time that I didn't have before, swayed by a huge performance gain that I will use the other 5% of my seat time.

Food for thought anyways...

 

dan...k's description of the surging is exactly how i described the issue.

I believe it could be due to one of two things:

1) Valve in the wastegate
2) Flat line in the MAP.

congrats on the install dan...k.

We can now line the two up...6MT versus 5AT.

 

Has anyone continued to pursue Comptech about this issue in the tune? What results have we gotten from them?

 

Superchargers dont use wastegates.

 

... now that would be fun!!!

 

Comptech said the car is staying in a closed loop longer then it should. From what i understand from the many people that have the charger, the car won't stay in that "jerking" or "surging" state if you hold the rpms at that piont. it's a quick thing..

 

comptech said they might do a re-flash

 

when i have mine installed early next week, i will study this issue.. i will hook up my air/fuel gauge and see what's going on with that..

 

What A/F gauge do you have?

 

it's an autometer nexus gauge.. only problem is it doesn't give numbers.. i'll know in general terms if the car is running lean or rich at any given point..

 

the thing is, when i had it in my car, the meter would jump around a bit at partical throttle, and this is "stock"

 

+

Exactly what scares me here....Comptech. Good stuff....slow to respond. You mean to tell me they sold all the SC'ers and they are telling you they "might" do a reflash for such an obvious problem? Doesnt sound like the definate "they are gonna fix that closed loop problem" that we were hearing out of the other guy and more like typical comptech SOP now....which could take a year and a half to respond to this problem. What a scam!

I guess maybe when they fix the closed loop problem....I will be more interested. I do want more power....but a product that works right too and that works right with the motor it is married to. If people keep buying them....they will never respond to that problem and will eventually even stop calling it a problem....I mean...why spend money on a fix when people are actually buying them up?

 

I would relax a bit and find someone with this charger and take a drive.. You can't go by descriptions on here..

 

call comptech tech support

 

Relax? Not sure I am "up in arms" over this or anything? I would like to get a SC some day soon...but as I stated in an earlier thread...I buy stuff....I dont get sold on stuff....so I would like to know what Comptech intends to do about this problem so I can make an informed decision on the purchase. Calling Comptech has always proved fruitless for me as they (again) are slow or nonexistant to respond whatsoever. Shit...I called them about 6 months ago asking about the brembo brake upgrade and still yet to get a call back...and I was just asking if they would fit my automatic with A-spec rims or if the mounts were different or something....not even a call back...and how much is that brake set-up. Thats the kind of ignoring things I am talking about! If they ignore a prospective sale.....are they gonna ignore me after I buy? Trend tends to say....(you decide) I cant tell you the amt of people on this board alone that called Comptech about something they wanted to buy and never got a call back whatsoever. Too numerous to list. Thats what I am worried about.

You are right...gotta do a seat of the pants test on one that is installed so I can make the right choice for me. Now I just gotta find somebody with an Automatic with a SC installed for me to check out!

 

make sure ur air/fuel gauge is wideband that comes with your 02 sensor otherwire u will never get the right reading. it has to be wideband gauge=around$300.00

 

Thanks. I am down for the comparison anytime.

 

Thanks, Tray. I am enjoying every minute of it. These guys kick ass!

 

Jerking issue thread guys...not a lovefest thread! (j/k!)

 

The air/fuel numbers aren't on my dyno sheet. The print out I recieved is a graph with hp and ft/lbs. It also has the test conditions. I'll get Topspeed to send me the file, so I can post it. Where is a good place to upload files?

 

that would be nice, im very interested to see you air/fuel numbers. try to upload at imageshack.com

 

i love it.. yeah i understand your concern.. i was successful gettin a hold of the tech guy everytime i called.. i am usually hesitant when issues like these arise also. for some reason, i went ahead and did it anyway, taking the word of people saying it's not THAT big of a deal, and taking comptech at it's word that they will have a fix.. if they drag their ass, i'll have to make a trip out there

 

That's pretty worthless IMO. What is lean on one car may be rich or stoich on another. You need a gauge or a meter that displays the true value.

 

no shit bro. that's the reason i don't have it hooked up at the moment

 

Why bother buying it is my point.

AEM makes a great gauge and PLX and Techedge both make good meters.

 

I hear ya.. i'll look into those gauges.. thanks

 

Could have been a little more polite about it though...huh? Its as if he has never made the mistake of buying a chia pet or something at one time or another! (j/k)

 

Sorry, I forget some of you guys in here are a little thin skinned. I'll remember to sugar coat the delivery of my opinion next time.

 

Ah shit dude...I was just messing with ya a bit! You cant be a self described asshole like myself and not admire others of the same caliber!

Currently in a three step de-assholizing program! (lol)

 

Thanks for the laugh!!

 

Ah, what the hell...you gotta have a sense to humor around here or your screwed! Just having fun! (damn, I was in a mood yesterday wasnt I)

Must be early onset male menopause! (lol) Oh wait...I'm not 40+ yet! - barely hangin on though... ....40 is gonna hit me before I know it!

 

 

No...screwy is purchasing a SC that is herky jerky before they find a fix!

BTW...if you saw all the car parts I had in my house and garage...you would friggin KNOW I was crazy! I cant even believe I spent my money on some of this shit.

 

i called one of these guys on here that has the charger and said everyone is over-reacting to the so called "issue" and that it's nothing.. i hope that's the case.. if not, i'll make sure i only drive at full throttle no matter where i go.. drive throughs.. bank atm drive throughs.. toll booths..

 

Maybe you could snag one of those tube things and practice tossing it into the holder on the way through at full throttle! That could make for some fun! Maybe practice the toss on sundays when the bank is closed?

Side note...Geez....the crazy fans are already all over the place here in Indianapolis waiting outside the Colts complex...geez folks...get a life! I think they play the Steelers on Sunday.

 

Go Peyton!!

 

RESPONSE FROM COMPTECH TECH SUPPORT

Hi BklynPanMan,

I am sorry there is so much misinformation posted on your site. I hope other people/company’s out there make supercharger or turbo kits for the TL in the end the TL customer will have more choices. There is not anything wrong with the 04-06 TL Supercharger kit. The kit works great, makes great HP and TQ. Everyone that has driven a TL with a supercharger loves it. Yes, in the two years of development the kit have taken to produce we have made great advancements (from belts breaking to not making any power). Are there some small compromises in get 60 more 50 state legal horsepower? Yes, one of them is a very small surging at very low RPM but I still think most of the people that buy or own the supercharger think this is a very small price to pay. But in most part the TL kit one of our best, most complete, most developed kits we have ever offered. As for the surge problem we are aware of the issue and we do not have a fix for it. We do have some things we would like to try to help reduce or eliminate it. But that requires things like ECU reflashing or clutch type blower pulleys, or ?. All of which have never been done before by Comptech and will require a lot of development/testing. I think we have been very accessible by email and phone. Sorry, we do not have the personal or resources too answer questions on each and every car site web form that we happen to make parts for.



Thanks,

Comptech Tech Dept.

916-939-9118 ext.113