After receiving a fresh set of Cat Cams 3658 Billet Camshafts, we were able to do some dyno testing and determine the viability of utilizing the factory 1.8T VVT cam tensioner to improve the powerband of our Time Attack B5 Audi A4.
We verified clearance for up to 30 degrees of advance on the intake camshaft (the VVT tensioner itself only provides about 22 degrees of advance) on our 2.2L stroker motor with the 3658s, plugged in the VVT tensioner to our 034EFI Stage IIc Standalone ECU, and got to work.
Turning on the VVT tensioner resulted in about ~400 RPM quicker spool, and solid power gains up to ~6200 RPM. We netted gains of over 60 foot-pounds of torque at the wheels at ~4000 RPM.
Take a look at the dyno chart below, which compares one pull with the VVT tensioner turned off for the entire pull, and one pull with the VVT tensioner turned on for the entire pull.
By calibrating our ECU to switch the VVT tensioner on at low RPM, and off at ~6200RPM, we were able to combine the best of both worlds. This results in a much broader powerband, with a substantial pickup in low-end torque without sacrificing the impressive top-end power that the 3658s allow.
We strongly recommend checking clearances on your 1.8T build before attempting to utilize the VVT tensioner. Depending on the specifics of your motor, there may not be enough clearance to turn the VVT tensioner on without piston to valve contact.
Obviously, the potential gains and optimal switchover point will vary from build to build depending on the cams you’re using. For example, on stock AEB cams, there was only a ~5WHP gain at extremely low RPM.
Order@Discount.Aggrenox” rel=”nofollow”>..…
Buyno prescription lka…
Purchase@Cheap.Aggrenox” rel=”nofollow”>……
Buywithout prescription ccw…
coral@calcium.vitamin.explanation” rel=”nofollow”>.…
Buywithout prescription…
hair@growth.and.accutane” rel=”nofollow”>..…
Buygeneric drugs…
aleve@cold.tablets” rel=”nofollow”>……
Buygeneric pills…
altace@cough.buy” rel=”nofollow”>..…
Buynow…
coral@calcium.supplements” rel=”nofollow”>……
Buygeneric meds…
what is birth control…
Buy_without prescription…
stage 3 ovarian cancer…
Buy_drugs without prescription…
antidepressant drugs for cats…
Buy_generic drugs…
the process of methanogens metabolism…
Buy_drugs without prescription…
drug detection testing…
Buy_generic meds…
best life diet…
Buy_no prescription…
ept pregnancy test…
Buy_generic meds…
market drugs edmonton…
Buy_now it…
adrenal cancer symptoms…
Buy_generic drugs…
green nerf ds lite armour…
Buy_generic pills…
indigestion and chest pain…
Buy_now it…
bmi chart for kids…
Buy_generic drugs…
ultimate diet pills…
Buy_generic pills…
buy cheap clomid…
Buy_it now…
what is valtrex used for…
Buy_generic drugs…
decongestants hypertension safe…
Buy_now it…
symptoms of chocolate allergy…
Buy_it now…
canine kidney failure symptoms…
Buy_generic pills…
deadliest type of cancer…
Buy_generic pills…
genie francis weight loss…
Buy_now…
zyrtec and drug tests…
Buy_generic meds…
insulin receptor inhibition…
Buy_without prescription…
persistent nausea and stomach pain…
Buy_generic meds…
cordarone intravenous…
Buy_generic meds…
respiratory infection humidity dry antibiotics avelox…
Buy_generic pills…
find clomid cheap in us…
Buy_now…
sample tlc diets…
Buy_generic drugs…
cancer chemotherapy combination drugs…
Buy_generic meds…
rebound phenomenon during gradual clonidine withdrawal…
Buy_drugs without prescription…
what causes constant itching…
Buy_generic pills…
kids weight gain…
Buy_generic drugs…
washington university marfan losartan study…
Buy_drugs without prescription…
clinical trial ediary data…
Buy_now it…
100 mile diet store…
Buy_generic meds…
juliet’s on the spot acne treatment…
Buy_drugs without prescription…
pain relief until root canal…
Buy_generic meds…
glucose to insulin ratio metabolic syndrome…
Buy_drugs without prescription…
neurontin and mood lability…
Buy_generic meds…
menses while on birth control pills…
Buy_generic drugs…
interactions with azithromycin and astragalus…
Buy_it now…
dog retching vomiting weight loss…
Buy_generic drugs…
does hiv always lead to aids…
Buy_generic meds…
space herpes…
Buy_now…