Author Topic: Stage 2 already but still getting mixed answers on induction  (Read 2434 times)

Offline Dalo Harkin

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Possibly one for Wazzzer or someone with a stage 2 to answer.

Running my stage 2 still and in the main all going good, getting a few slight hesitations here and there so I'm thinking it'll be the flow somewhere...

EVERY tuner lists that at a stage 2 you NEED a CAI of some kind, I'm running the modified box with the R32 snorkel and the pipercross panel filter, and I don't really want to go and spend £100 or more on a decent CAI for a few BHP but if it helps with the hesitations it would be well worth it. Also from the MAF readings done on the road, I'm around the 250BHP mark

What you think guys on stage 2
ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)

Offline Wazzzer

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Re: Stage 2 already but still getting mixed answers on induction
« Reply #1 on: 04 January 2018, 18:37 »
I was running the R32 box on mine with stage 2 and didn't have any problems with hesitation.

If you want a CAI just keep your eyes on ebay as they pop up quite often, I think I paid £20 for my carbon one. Personally I wouldn't use a cheap aluminium CAI as the alu will suffer from heatsoak and be counter productive.

Just make sure you get yourself a decent filter on the end of it though, mines actually a Greddy mushroom; it's about the only jap thing I'll let near it!


1999 1.8T: R-Tech remap - 225bhp/256lb/ft : K03s : THS FMIC : THS PCR pipe : 2.5" stainless exhaust : THS FR3 Engine mounts : G60/VR6 clutch : Calibra Yellow injectors : VR6 MAF : Devils Own WMI : Forge 007p : Carbonio CAI : Leon Cupra R Brembos : FK AK Street coilovers : Votex skirts : Anniversary front : click ---> http://www.golfgtiforum.co.uk/index.php?topic=92175

Offline OSR

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Re: Stage 2 already but still getting mixed answers on induction
« Reply #2 on: 12 January 2018, 12:58 »
I'm running Stage 2 and have a Jetex cone filter on the MAF. I used to have a cheapo "eBay special" CAI and the alu did used to get very hot after a long/hard run plus the filter quality was really poor.

You're right in that pretty much all tuners say at Stage 2 you need a CAI fitted, but I've never had any issues and tbh I'm not going to notice heat soak. Car made 230bhp on the nose when I had the Stage 2 Revo map done and it's felt spot on ever since with no change to setup. Yes I'm aware of running cone filters open in the engine bay and heat soak, and I guess if i was to go down a custom mapping route then a CAI would give me a bit more but day to day for a car I drive on sunny weekends for fun am I really going to notice, personally I don't think so.


Offline Dalo Harkin

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Re: Stage 2 already but still getting mixed answers on induction
« Reply #3 on: 15 January 2018, 16:47 »
I do have a Carbonio still from ages ago, but my R32 front bumper had the two outer honeycomb pieces removed and flushed with the rest (basically I have the R32 bumper with just the middle mouth piece for the FMIC) I did this as it hides the bigger pipes completely, but doesn't allow any air flow for the Carbonio.

I found the Carbonio sounded fine but it wasn't getting the airflow needed.

I'm not running the R32 airbox just the snorkel into my modified box (fins removed and smoothed) and the Pipercross filter.
ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)

Offline Jordan_gti

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Re: Stage 2 already but still getting mixed answers on induction
« Reply #4 on: 26 January 2018, 16:58 »
Id get access to VCDS & do some logging, take note of when the hesitation occurs & check for differences in your logs (Fuel, air, boost etc...)
2002 Golf Gti 1.8T (AUM) LC9Z

Offline Scott D

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Re: Stage 2 already but still getting mixed answers on induction
« Reply #5 on: 26 January 2018, 19:17 »
Still got my old R32 front bumper on?  :grin:

I don't think lack of airflow would be causing noticeable hesitation. 230bhp was the limit for standard airbox from tuner talk years back.

Have you had the car on a dyno recently? MAFs do over read if on the way out and cause other issues.

2003 1.8T GTI 180 - APR Stage I, S2000 Filter, R-Tech Supersize TIP, Bilstein B12 Suspension, 18" OZ Superleggera, Recaro Heated Leathers, US Spec Rear Lights, N249/SAI/PCV Delete

1.8T AUQ - 241bhp & 286 ft-lb
R-Tech Map, Forge FMIC, SFS Oversized TIP, Ported Manifold, Milltek Turboback non res exhaust, Forge 007p, N249 & N112 delete, SAI delete, S2000 Air Filter, Sachs clutch & Lightweight Flywheel

Offline Dalo Harkin

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Re: Stage 2 already but still getting mixed answers on induction
« Reply #6 on: 16 February 2018, 11:28 »
Hi Scott, how are you buddy?

Yes I still have it, looks awesome to be honest PM me your number and i'll get a pic across to you  :tongue:

No dyno, just live readings off the MAF with VCDS

It is hard to explain but there is definite hesitation when it has anything BUT the panel filter and DSG stuff on. Also bear in mind we aren't talking at 30 mph here
ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)