Lund Tuning ProCharger Poll

[Nemesys]

Is yours a Performance Package car with the 3.73 gearing? I think they seem to do it the worst. Higher mechanical advantage of the lower gearing, makes the bucking worse. More torque output during the bucking.

I can daily drive mine too. But could never take it to a mountain road or road coarse where part throttle is needed. You switch up to the next gear and it bucks like wild. If I stay in one gear I cant get on and off the gas and it wont buck except where it should. The upshifting is where mine bucks violently. Enough where it spins the tires, as was confirmed on the datalogs, and my foot was at part throttle.

Mine runs great every where else, except after an upshift. Then bucks crazy.

Yep, mine is a Track Pack car with 3.73s. Ive been on two mountain runs at Tail of the Dragon, and never once has it been a problem. I did have the problems you indicated and I told Lund and it was tuned out for the most part. The surging I feel is at highway speeds when im cruising at 6th gear and very light on the throttle holding speed. I can SOMEWHAT feel it still, but its not super noticeable to passengers.

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[Tcstang]

Between this and the other thread there isn't much going prochargers way it seems like.

 

[r1lovin]

Lund Remote tuned with the specs below.

Car is a PP car (manual w/ 3.73 gear) and BUCKs and SURGES like an SOB. Horrible part throttle driving that has yet to be corrected by the tuner. They keep blaming the Surge Valve. ProCharger keeps blaming the tune. So FRIGGIN frustrating.

1. Kit: HO kit with D1SC
2. Boost: 8-9 psi
3. 4.38" Pulley
4. 93 octane - 10% Ethanol
5. 604 whp/480 ft lbs (Dynojet STD correction)

It is a late production kit, bought a couple months ago. Has the upgraded intake tube that fits very good. Easy to install.

I have a hard time believing that ANYONE with a manual trans PP car has NO BUCKING at all with a Lund tune. UNLESS you have breathers on the car, disabled IMRC or swapped to a 11-14 manifold.

ANYONE????

I have no surging issues at all on my pp car. Ho kit, 8-9 psi(Not confirmed yet), id1000s, brisk plugs, lund tuned, 91 octane. 500 miles so far and zero surging. In town and highway.

 

[Toothless]

I wonder if this surging and bucking are the same thing.

My definition of surging is high speed fast bucking of the car after an upshift.

My example is when at part throttle and doing an upshift to next geat and maintaining same throttle position after the upshift. My car bucks wildly enough to throw you back and forth in the seat and spinning the tires all while trying to keep a constant part throttle pedal position. It bucks hard enough im.sure the pedal must be moving slightly because your body is lurching g forward and back during the bucking.

Surging to me would be the car slightly surging forward when trying to hold a fixed speed and throttle. Mine doesn't do this in any gear or situation I've been in. If I stay in one gear and don't shift, mine acts like a stock car on steroids. Lol

 

[Toothless]

Best way I know to cause it, and check to see if you car does it, is to drive the car on a wet road or in the rain. Try to drive the car fast, but not fast enough to spin the tires and crash. Lol. And shift about 3800 to 4200 rpm into the next gear and try to go the same acceleration rate in the next gear. That was the first instance that mine did it. I drove probably 400 miles or so and it never did it. The first 400 mile I was WOT or poking around. The car was dirty So i drove it in the rain, and found this bastard bucking issue. Been Datalogging and trying to get it fixed for 6 weeks now.

 

[Chargedguard5.0]

I will have my car back at the end of the week. This will be my 3rd different tune. I'll let u guys know if I have any luck. I had the Lund tune and it surged but not too bad.

 

[mustang_guy]

I havent seen many vortech or Paxton guys complaining. I wonder if this is something with the prochargers. is that a possibility?

 

[BAdrosky]

I havent seen many vortech or Paxton guys complaining. I wonder if this is something with the prochargers. is that a possibility?

Wondering the same, a lot of time people just keep quiet.

 

[whatsup62]

I havent seen many vortech or Paxton guys complaining. I wonder if this is something with the prochargers. is that a possibility?

Great question!!! I was about to purchase , now I am going to wait and see what/if the fix is and see what other brand centrifugal owners say say.

 

[mustang_guy]

The reason i asked is because i personally want a vortech Jt-b or Ysi-b. But reading through multiple procharger issue threads and now this one it has me wondering if its just limited to mostly procharger or vortech and paxton as wells. It got me thinking and i havent seen vortech or paxton having these issues. But if it is effecting the other two brands itll have me considering twin 62mm if its effecting everyone.

 

[Toothless]

I don't know about the other brands. I choose Procharger because the easy install and reversibilty of the kit. The tune is 95% perfect on mine. But the 5% missing is so annoying it ruins 40% of the potential of the kit. It's fast for a single bolt on. I talked to a local Ford Calibration guru and he thinks it's a torque table and inverse torque table issue. He's having a similar issue on a twin turbo Armageddon turbo kit he's tuning.

 

[beefcake]

I don't know about the other brands. I choose Procharger because the easy install and reversibilty of the kit. The tune is 95% perfect on mine. But the 5% missing is so annoying it ruins 40% of the potential of the kit. It's fast for a single bolt on. I talked to a local Ford Calibration guru and he thinks it's a torque table and inverse torque table issue. He's having a similar issue on a twin turbo Armageddon turbo kit he's tuning.

have you sent lund logs during the occurrence for them to fine tune it, the tunes are constantly evolving on these things

 

[Process]

I don't know about the other brands. I choose Procharger because the easy install and reversibilty of the kit. The tune is 95% perfect on mine. But the 5% missing is so annoying it ruins 40% of the potential of the kit. It's fast for a single bolt on. I talked to a local Ford Calibration guru and he thinks it's a torque table and inverse torque table issue. He's having a similar issue on a twin turbo Armageddon turbo kit he's tuning.

thats exactly what it is, and go too far in one direction in those tables and you can have a major WOT hesitation issue like I'm having. Theres a slight work around and thats increasing the demand to make the car go faster than what the pedal input is, but thats a hack around it. It doesn't always fix things either.

 

[bobbyh]

I don't know about the other brands. I choose Procharger because the easy install and reversibilty of the kit. The tune is 95% perfect on mine. But the 5% missing is so annoying it ruins 40% of the potential of the kit. It's fast for a single bolt on. I talked to a local Ford Calibration guru and he thinks it's a torque table and inverse torque table issue. He's having a similar issue on a twin turbo Armageddon turbo kit he's tuning.

I'd be very annoyed at spending money for FI and having to battle software issues. I hate drive-ability issues!

Would you purchase the Procharger again if the Paxton/Vortech kits didn't require so much cutting/pasting?

 

[Process]

I'd be very annoyed at spending money for FI and having to battle software issues. I hate drive-ability issues!

Would you purchase the Procharger again if the Paxton/Vortech kits didn't require so much cutting/pasting?

Procharger kit in itself is some of the issue for the need to do so many software hacks. That being said, a good tuner can eliminate the issues.

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